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Comparison of Christianity and Judaism

Christianity began as a movement within Second Temple Judaism, but the two religions gradually diverged over the first few centuries of the Christian era. Today, differences of opinion vary between denominations in both religions, but the most important distinction is Christian acceptance and Jewish non acceptance of Jesus as the Messiah prophesied in the Hebrew Bible and Jewish tradition. Early Christianity distinguished itself by determining that observance of halakha (Jewish law) was not necessary for non Jewish converts to Christianity (see Pauline Christianity). Another major difference is the two religions' conceptions of God. Depending on the denomination followed, the Christian God is either believed to consist of three persons of one essence (Father, Son and Holy Spirit), with the doctrine of the incarnation of the Son in Jesus being of special importance, or like Judaism, believes in and emphasizes the Oneness of God. Judaism, however, rejects the Christian concept of God in human form. While Christianity recognizes the Hebrew Bible (called the Old Testament by Christians) as part of its scriptural canon, Judaism does not recognize the Christian New Testament. The relative importance of belief and practice constitute an important area of difference. Most forms of Protestant Christianity emphasize correct belief (or orthodoxy), focusing on the New Covenant as mediated through Jesus Christ, as recorded in the New Testament. Judaism places emphasis on correct conduct (or orthopraxy), focusing on the Mosaic covenant, as recorded in the Torah and Talmud. Mainstream Roman Catholicism occupies a middle position, stating that both faith and works are factors in a person's salvation. Some schools of thought within Catholicism, such as Franciscanism and liberation theology, explicitly favor orthopraxy over orthodoxy. Praxis is of central importance to Eastern Christianity as well, with Saint Maximus the Confessor going as far as to say that "theology without action is the theology of demons." Christian conceptions of right practice vary (e. g., Catholic social teaching and its preferential option for the poor; the Eastern Orthodox Church's practices of fasting, hesychasm, and asceticism; the Protestant work ethic of Calvinists and others), but differ from Judaism in that they are not based on following halakha or any other interpretation of the Mosaic covenant. While more liberal Jewish denominations may not require observance of halakha, Jewish life remains centred on individual and collective participation in an eternal dialogue with God through tradition, rituals, prayers and ethical actions.

Judaism's purpose is to carry out what it holds to be the covenant between God and the Jewish people. The Torah , both written and oral, tells the story of this covenant, and provides Jews with the terms of the covenant. The Oral Torah is the primary guide for Jews to abide by these terms, as expressed in tractate Gittin 60b ("the Holy One, Blessed be He, did not make His covenant with Israel except by virtue of the Oral Law") to help them learn how to live a holy life, and to bring holiness, peace and love into the world and into every part of life, so that life may be elevated to a high level of kedushah, originally through study and practice of the Torah, and since the destruction of the Second Temple, through prayer as expressed in tractate Sotah 49a "Since the destruction of the Temple, every day is more cursed than the preceding one; and the existence of the world is assured only by the kedusha and the words spoken after the study of Torah." Since the adoption of the Amidah, the acknowledgement of God through the declaration from Isaiah 6:3 "Kadosh [holy], kadosh, kadosh, is HaShem, Master of Legions; the whole world is filled with His glory". as a replacement for the study of Torah, which is a daily obligation for Jews, and sanctifies God in itself. This continuous maintenance of relationship between the individual Jew and God through either study, or prayer repeated three times daily, is the confirmation of the original covenant. This allows the Jewish people as a community to strive and fulfill the prophecy "I, the Lord, have called you in righteousness, and will hold your hand and keep you. And I will establish you as a covenant of the people, for a light unto the nations." (i. e., a role model) over the course of history, and a part of the divine intent of bringing about an age of peace and sanctity where ideally a faithful life and good deeds should be ends in themselves, not means (see also Jewish principles of faith). According to Christian theologian Alister McGrath, the Jewish Christians affirmed every aspect of then contemporary Second Temple Judaism with the addition of the belief that Jesus was the messiah, with Isaiah 49:6, "an explicit parallel to 42:6" quoted by Paul the Apostle in Acts 13:47 and reinterpreted by Justin Martyr. According to Christian writers, most notably Paul, the Bible teaches that people are, in their current state, sinful, and the New Testament reveals that Jesus is both the Son of man and the Son of God, united in the hypostatic union, God the Son, God made incarnate; that Jesus' death by crucifixion was a sacrifice to atone for all of humanity's sins, and that acceptance of Jesus as Savior and Lord saves one from Divine Judgment, giving Eternal life. Jesus is the mediator of the New Covenant. to be the proclamation of the New Covenant ethics, in contrast to the Mosaic Covenant of Moses from Mount Sinai. But some scholars, like Margaret Barker, propose that early Christianity has roots in First Temple Israelite religion, which is dubbed as the "Temple Theology". Baker's works have been criticized for engaging in parallelomania and failing to engage in the broader scholarly literature but it has gained some religious and academic support.

Christians believe that God has established a New Covenant with people through Jesus, as recorded in the Gospels, Acts of the Apostles, Epistles, and other books collectively called the New Testament (the word testament attributed to Tertullian is commonly interchanged with the word covenant). For some Christians, such as Roman Catholics and Orthodox Christians, this New Covenant includes authoritative sacred traditions and canon law. Others, especially Protestants, reject the authority of such traditions and instead hold to the principle of sola scriptura, which accepts only the Bible itself as the final rule of faith and practice. Anglicans do not believe in sola scriptura. For them scripture is the longest leg of a 3 legged stool: scripture, tradition and reason. Scripture cannot stand on its own since it must be interpreted in the light of the Church's patristic teaching and ecumenical creeds. Additionally, some denominations include the "oral teachings of Jesus to the Apostles", which they believe have been handed down to this day by apostolic succession. Christians refer to the biblical books about Jesus as the New Testament, and to the canon of Hebrew books as the Old Testament. Judaism does not accept the retronymic labeling of its sacred texts as the "Old Testament", and some Jews refer to the New Testament as the Christian Testament or Christian Bible. Judaism rejects all claims that the Christian New Covenant supersedes, abrogates, fulfills, or is the unfolding or consummation of the covenant expressed in the Written and Oral Torahs. Therefore, just as Christianity does not accept that Mosaic law has any authority over Christians, Judaism does not accept that the New Testament has any religious authority over Jews.

Many Jews view Christians as having quite an ambivalent view of the Torah, or Mosaic law: on one hand Christians speak of it as God's absolute word, but on the other, they apply its commandments with a certain selectivity. Some Jews contend that Christians cite commandments from the Old Testament to support one point of view but then ignore other commandments of a similar class and of equal weight. Examples of this are certain commandments that God states explicitly be a "lasting covenant." Some translate the Hebrew as a "perpetual covenant." Christians explain that such selectivity is based on rulings made by early Jewish Christians in the Book of Acts, at the Council of Jerusalem, that, while believing gentiles did not need to fully convert to Judaism, they should follow some aspects of Torah like avoiding idolatry and fornication and blood. This view is also reflected by modern Judaism, in that Righteous gentiles need not convert to Judaism and need to observe only the Noahide Laws, which also contain prohibitions against idolatry and fornication and blood. Some Christians agree that Jews who accept Jesus should still observe all of Torah, see for example Dual covenant theology, based on warnings by Jesus to Jews not to use him as an excuse to disregard it, and they support efforts of those such as Messianic Jews (Messianic Judaism is considered by most Christians and Jews to be a form of Christianity) to do that, but some Protestant forms of Christianity oppose all observance to the Mosaic law, even by Jews, which Luther criticised as Antinomianism. A minority view in Christianity, known as Christian Torah submission, holds that the Mosaic law as it is written is binding on all followers of God under the New Covenant, even for gentiles, because it views God's commands as "everlasting" and "good."

Traditionally, both Judaism and Christianity believe in the God of Abraham, Isaac and Jacob, for Jews the God of the Tanakh, for Christians the God of the Old Testament, the creator of the universe. Judaism and major sects of Christianity reject the view that God is entirely immanent (although some see this as the concept of the Holy Ghost) and within the world as a physical presence (although Christians believe in the incarnation of God). Both religions reject the view that God is entirely transcendent, and thus separate from the world, as the pre Christian Greek Unknown God. Both religions reject atheism on one hand and polytheism on the other. Both religions agree that God shares both transcendent and immanent qualities. How these religions resolve this issue is where the religions differ. Christianity posits that God exists as a Trinity; in this view God exists as three distinct persons who share a single divine essence, or substance. In those three there is one, and in that one there are three; the one God is indivisible, while the three persons are distinct and unconfused, God the Father, God the Son, and God the Holy Spirit. It teaches that God became especially immanent in physical form through the Incarnation of God the Son who was born as Jesus of Nazareth, who is believed to be at once fully God and fully human. There are denominations self describing as Christian who question one or more of these doctrines, however, see Nontrinitarianism. By contrast, Judaism sees God as a single entity, and views trinitarianism as both incomprehensible and a violation of the Bible's teaching that God is one. It rejects the notion that Jesus or any other object or living being could be 'God', that God could have a literal 'son' in physical form or is divisible in any way, or that God could be made to be joined to the material world in such fashion. Although Judaism provides Jews with a word to label God's transcendence (Ein Sof, without end) and immanence (Shekhinah, in dwelling), these are merely human words to describe two ways of experiencing God; God is one and indivisible.

A minority Jewish view, which appears in some codes of Jewish law, is that while Christian worship is polytheistic (due to the multiplicity of the Trinity), it is permissible for them to swear in God's name, since they are referring to the one God. This theology is referred to in Hebrew as Shituf (literally "partnership" or "association"). Although worship of a trinity is considered to be not different from any other form of idolatry for Jews, it may be an acceptable belief for non Jews (according to the ruling of some Rabbinic authorities).

Judaism teaches that the purpose of the Torah is to teach us how to act correctly. God's existence is a given in Judaism, and not something that most authorities see as a matter of required belief. Although some authorities see the Torah as commanding Jews to believe in God, Jews see belief in God as a necessary, but not sufficient, condition for a Jewish life. The quintessential verbal expression of Judaism is the Shema Yisrael, the statement that the God of the Bible is their God, and that this God is unique and one. The quintessential physical expression of Judaism is behaving in accordance with the 613 Mitzvot (the commandments specified in the Torah), and thus live one's life in God's ways. Thus fundamentally in Judaism, one is enjoined to bring holiness into life (with the guidance of God's laws), rather than removing oneself from life to be holy. Much of Christianity also teaches that God wants people to perform good works, but all branches hold that good works alone will not lead to salvation, which is called Legalism, the exception being dual covenant theology. Some Christian denominations hold that salvation depends upon transformational faith in Jesus, which expresses itself in good works as a testament (or witness) to ones faith for others to see (primarily Eastern Orthodox Christianity and Roman Catholicism), while others (including most Protestants) hold that faith alone is necessary for salvation. Some argue that the difference is not as great as it seems, because it really hinges on the definition of "faith" used. The first group generally uses the term "faith" to mean "intellectual and heartfelt assent and submission". Such a faith will not be salvific until a person has allowed it to effect a life transforming conversion (turning towards God) in their being (see Ontotheology). The Christians that hold to "salvation by faith alone" (also called by its Latin name "sola fide") define faith as being implicitly ontological—mere intellectual assent is not termed "faith" by these groups. Faith, then, is life transforming by definition.

In both religions, offenses against the will of God are called sin. These sins can be thoughts, words, or deeds. Catholicism categorizes sins into various groups. A wounding of the relationship with God is often called venial sin; a complete rupture of the relationship with God is often called mortal sin. Without salvation from sin (see below), a person's separation from God is permanent, causing such a person to enter Hell in the afterlife. Both the Catholic Church and the Orthodox Church define sin more or less as a "macula", a spiritual stain or uncleanliness that constitutes damage to man's image and likeness of God. Hebrew has several words for sin, each with its own specific meaning. The word pesha, or "trespass", means a sin done out of rebelliousness. The word aveira means "transgression". And the word avone, or "iniquity", means a sin done out of moral failing. The word most commonly translated simply as "sin", het, literally means "to go astray". Just as Jewish law, halakha provides the proper "way" (or path) to live, sin involves straying from that path. Judaism teaches that humans are born with free will, and morally neutral, with both a yetzer hatov, (literally, "the good inclination", in some views, a tendency towards goodness, in others, a tendency towards having a productive life and a tendency to be concerned with others) and a yetzer hara, (literally "the evil inclination", in some views, a tendency towards evil, and in others, a tendency towards base or animal behavior and a tendency to be selfish). In Judaism all human beings are believed to have free will and can choose the path in life that they will take. It does not teach that choosing good is impossible—only at times more difficult. There is almost always a "way back" if a person wills it. (Although texts mention certain categories for whom the way back will be exceedingly hard, such as the slanderer, the habitual gossip, and the malicious person)

The rabbis recognize a positive value to the yetzer hara: one tradition identifies it with the observation on the last day of creation that God's accomplishment was "very good" (God's work on the preceding days was just described as "good") and explain that without the yetzer ha'ra there would be no marriage, children, commerce or other fruits of human labor; the implication is that yetzer ha'tov and yetzer ha'ra are best understood not as moral categories of good and evil but as selfless versus selfish orientations, either of which used rightly can serve God's will. In contrast to the Jewish view of being morally balanced, Original Sin refers to the idea that the sin of Adam and Eve's disobedience (sin "at the origin") has passed on a spiritual heritage, so to speak. Christians teach that human beings inherit a corrupted or damaged human nature in which the tendency to do bad is greater than it would have been otherwise, so much so that human nature would not be capable now of participating in the afterlife with God. This is not a matter of being "guilty" of anything; each person is only personally guilty of their own actual sins. However, this understanding of original sin is what lies behind the Christian emphasis on the need for spiritual salvation from a spiritual Saviour, who can forgive and set aside sin even though humans are not inherently pure and worthy of such salvation. Paul the Apostle in Romans and I Corinthians placed special emphasis on this doctrine, and stressed that belief in Jesus would allow Christians to overcome death and attain salvation in the hereafter. Roman Catholics, Eastern Orthodox Christians, and some Protestants teach the Sacrament of Baptism is the means by which each person's damaged human nature is healed and sanctifying grace (capacity to enjoy and participate in the spiritual life of God) is restored. This is referred to as "being born of water and the Spirit", following the terminology in the Gospel of St. John. Most Protestants believe this salvific grace comes about at the moment of personal decision to follow Jesus, and that baptism is a symbol of the grace already received.

The Hebrew word for "love", ahavah (אהבה), is used to describe intimate or romantic feelings or relationships, such as the love between parent and child in Genesis 22:2; 25: 28; 37:3; the love between close friends in I Samuel 18:2, 20:17; or the love between a young man and young woman in Song of Songs. Christians will often use the Greek of the Septuagint to make distinctions between the types of love: philia for brotherly, eros for romantic and agape for self sacrificing love. Like many Jewish scholars and theologians, literary critic Harold Bloom understands Judaism as fundamentally a religion of love. But he argues that one can understand the Hebrew conception of love only by looking at one of the core commandments of Judaism, Leviticus 19:18, "Love your neighbor as yourself", also called the second Great Commandment. Talmudic sages Hillel and Rabbi Akiva commented that this is a major element of the Jewish religion. Also, this commandment is arguably at the center of the Jewish faith. As the third book of the Torah, Leviticus is literally the central book. Historically, Jews have considered it of central importance: traditionally, children began their study of the Torah with Leviticus, and the midrashic literature on Leviticus is among the longest and most detailed of midrashic literature. Bernard Jacob Bamberger considers Leviticus 19, beginning with God's commandment in verse 3—"You shall be holy, for I the Lord your God, am holy"—to be "the climactic chapter of the book, the one most often read and quoted" (1981:889). Leviticus 19:18 is itself the climax of this chapter.

The only statements in the Tanakh about the status of a fetus state that killing an unborn infant does not have the same status as killing a born human being, and mandates a much lesser penalty. (although this interpretation is disputed, the passage could refer to an injury to a woman that causes a premature, live birth). The Talmud states that the fetus is not yet a full human being until it has been born (either the head or the body is mostly outside of the woman), therefore killing a fetus is not murder, and abortion—in restricted circumstances—has always been legal under Jewish law. Rashi, the great 12th century commentator on the Bible and Talmud, states clearly of the fetus lav nefesh hu: "it is not a person". The Talmud contains the expression ubar yerech imo—the fetus is as the thigh of its mother,' i. e., the fetus is deemed to be part and parcel of the pregnant woman's body." The Babylonian Talmud Yevamot 69b states that: "the embryo is considered to be mere water until the fortieth day." Afterwards, it is considered subhuman until it is born. Christians who agree with these views may refer to this idea as abortion before the quickening of the fetus. Judaism unilaterally supports, in fact mandates, abortion if doctors believe that it is necessary to save the life of the woman. Many rabbinic authorities allow abortions on the grounds of gross genetic imperfections of the fetus. They also allow abortion if the woman were suicidal because of such defects. However, Judaism holds that abortion is impermissible for family planning or convenience reasons. Each case must be decided individually, however, and the decision should lie with the pregnant woman, the man who impregnated her, and their Rabbi.

Jews and Christians accept as valid and binding many of the same moral principles taught in the Torah. There is a great deal of overlap between the ethical systems of these two faiths. Nonetheless, there are some highly significant doctrinal differences. Judaism has many teachings about peace and compromise, and its teachings make physical violence the last possible option. Nonetheless, the Talmud teaches that "If someone comes with the intention to murder you, then one is obligated to kill in self defense [rather than be killed]". The clear implication is that to bare one's throat would be tantamount to suicide (which Jewish law forbids) and it would also be considered helping a murderer kill someone and thus would "place an obstacle in front of a blind man" (i. e., makes it easier for another person to falter in their ways). The tension between the laws dealing with peace, and the obligation to self defense, has led to a set of Jewish teachings that have been described as tactical pacifism. This is the avoidance of force and violence whenever possible, but the use of force when necessary to save the lives of one's self and one's people. Although killing oneself is forbidden under normal Jewish law as being a denial of God's goodness in the world, under extreme circumstances when there has seemed no choice but to either be killed or forced to betray their religion, Jews have committed suicide or mass suicide (see Masada, First French persecution of the Jews, and York Castle for examples). As a grim reminder of those times, there is even a prayer in the Jewish liturgy for "when the knife is at the throat", for those dying "to sanctify God's Name". These acts have received mixed responses by Jewish authorities. Where some Jews regard them as examples of heroic martyrdom, but others saying that while Jews should always be willing to face martyrdom if necessary, it was wrong for them to take their own lives. Because Judaism focuses on this life, many questions to do with survival and conflict (such as the classic moral dilemma of two people in a desert with only enough water for one to survive) were analysed in great depth by the rabbis within the Talmud, in the attempt to understand the principles a godly person should draw upon in such a circumstance. The Sermon on the Mount records that Jesus taught that if someone comes to harm you, then one must turn the other cheek. This has led four Protestant Christian denominations to develop a theology of pacifism, the avoidance of force and violence at all times. They are known historically as the peace churches, and have incorporated Christ's teachings on nonviolence into their theology so as to apply it to participation in the use of violent force; those denominations are the Quakers, Mennonites, Amish, and the Church of the Brethren. Many other churches have people who hold to the doctrine without making it a part of their doctrines, or who apply it to individuals but not to governments, see also Evangelical counsels. The vast majority of Christian nations and groups have not adopted this theology, nor have they followed it in practice. See also But to bring a sword.

Although the Hebrew Bible has many references to capital punishment, the Jewish sages used their authority to make it nearly impossible for a Jewish court to impose a death sentence. Even when such a sentence might have been imposed, the Cities of Refuge and other sanctuaries, were at hand for those unintentionally guilty of capital offences. It was said in the Talmud about the death penalty in Judaism, that if a court killed more than one person in seventy years, it was a barbarous (or "bloody") court and should be condemned as such. Christianity usually reserved the death penalty for heresy, the denial of the orthodox view of God's view, and witchcraft or similar non Christian practices. For example, in Spain, unrepentant Jews were exiled, and it was only those crypto Jews who had accepted baptism under pressure but retained Jewish customs in private, who were punished in this way. It is presently acknowledged by most of Christianity that these uses of capital punishment were deeply immoral.

Orthodox Jews, unlike most Christians, still practice a restrictive diet that has many rules. Most Christians believe that the kosher food laws have been superseded, for example, they cite what Jesus taught in Mark 7: what you eat doesn't make you unclean but what comes out of a man's heart makes him unclean—although Roman Catholicism and Eastern Orthodoxy have their own set of dietary observances. Eastern Orthodoxy, in particular has very elaborate and strict rules of fasting, and continues to observe the Council of Jerusalem's apostolic decree of Act 15. Some Christian denominations observe some biblical food laws, for example, the practice of Ital in Rastafari. Jehovah's Witnesses do not eat blood products and are known for their refusal to accept blood transfusions based on not "eating blood".

Judaism does not see human beings as inherently flawed or sinful and needful of being saved from it, but rather capable with a free will of being righteous, and unlike Christianity does not closely associate ideas of "salvation" with a New Covenant delivered by a Jewish messiah, although in Judaism Jewish people will have a renewed national commitment of observing God's commandments under the New Covenant, and the Jewish Messiah will also be ruling at a time of global peace and acceptance of God by all people. Judaism holds instead that proper living is accomplished through good works and heartfelt prayer, as well as a strong faith in God. Judaism also teaches that gentiles can receive a share in "the world to come". This is codified in the Mishna Avot 4:29, the Babylonian Talmud in tractates Avodah Zarah 10b, and Ketubot 111b, and in Maimonides's 12th century law code, the Mishneh Torah, in Hilkhot Melachim (Laws of Kings) 8.11. The Protestant view is that every human is a sinner, and being saved by God's grace, not simply by the merit of one's own actions, pardons a damnatory sentence to Hell.

In Judaism, one must go to those he has harmed to be entitled to forgiveness. This means that in Judaism a person cannot obtain forgiveness from God for wrongs the person has done to other people. This also means that, unless the victim forgave the perpetrator before he died, murder is unforgivable in Judaism, and they will answer to God for it, though the victims' family and friends can forgive the murderer for the grief they caused them. Thus the "reward" for forgiving others is not God's forgiveness for wrongs done to others, but rather help in obtaining forgiveness from the other person. Sir Jonathan Sacks, Chief Rabbi of the United Hebrew Congregations of the Commonwealth, summarized: "it is not that God forgives, while human beings do not. To the contrary, we believe that just as only God can forgive sins against God, so only human beings can forgive sins against human beings."

Both Christianity and Judaism believe in some form of judgment. Most Christians (the exception is Full Preterism) believe in the future Second Coming of Jesus, which includes the Resurrection of the Dead and the Last Judgment. Those who have accepted Jesus as their personal saviour will be saved and live in God's presence in the Kingdom of Heaven, those who have not accepted Jesus as their saviour, will be cast into the Lake of fire (eternal torment, finite torment, or simply annihilated), see for example The Sheep and the Goats. In Jewish liturgy there is significant prayer and talk of a "book of life" that one is written into, indicating that God judges each person each year even after death. This annual judgment process begins on Rosh Hashanah and ends with Yom Kippur. Additionally, God sits daily in judgment concerning a person's daily activities. Upon the anticipated arrival of the Messiah, God will judge the nations for their persecution of Israel during the exile. Later, God will also judge the Jews over their observance of the Torah.

Catholicism teaches Extra Ecclesiam Nulla Salus ("Outside the Church there is no salvation"), which some, like Fr. Leonard Feeney, interpreted as limiting salvation to Catholics only. At the same time, it does not deny the possibility that those not visibly members of the Church may attain salvation as well. In recent times, its teaching has been most notably expressed in the Vatican II council documents Unitatis Redintegratio (1964), Lumen gentium (1964), Nostra aetate (1965), an encyclical issued by Pope John Paul II: Ut unum sint (1995), and in a document issued by the Congregation for the Doctrine of the Faith, Dominus Iesus in 2000. The latter document has been criticised for claiming that non Christians are in a "gravely deficient situation" as compared to Catholics, but also adds that "for those who are not formally and visibly members of the Church, salvation in Christ is accessible by virtue of a grace which, while having a mysterious relationship to the Church, does not make them formally part of the Church, but enlightens them in a way which is accommodated to their spiritual and material situation." Pope John Paul II on 2 October 2000 emphasized that this document did not say that non Christians were actively denied salvation: " this confession does not deny salvation to non Christians, but points to its ultimate source in Christ, in whom man and God are united". On 6 December the Pope issued a statement to further emphasize that the Church continued to support its traditional stance that salvation was available to believers of other faiths: "The gospel teaches us that those who live in accordance with the Beatitudes—the poor in spirit, the pure of heart, those who bear lovingly the sufferings of life—will enter God's kingdom." He further added, "All who seek God with a sincere heart, including those who do not know Christ and his church, contribute under the influence of Grace to the building of this Kingdom." On 13 August 2002 American Catholic bishops issued a joint statement with leaders of Reform and Conservative Judaism, called "Reflections on Covenant and Mission", which affirmed that Christians should not target Jews for conversion. The document stated: "Jews already dwell in a saving covenant with God" and "Jews are also called by God to prepare the world for God's Kingdom." However, many Christian denominations still believe it is their duty to reach out to "unbelieving" Jews. In December 2015, the Vatican released a 10,000 word document that, among other things, stated that Jews do not need to be converted to find salvation, and that Catholics should work with Jews to fight antisemitism.

Eastern Orthodox Christianity emphasizes a continuing life of repentance or metanoia, which includes an increasing improvement in thought, belief and action. Regarding the salvation of Jews, Muslims, and other non Christians, the Orthodox have traditionally taught that there is no salvation outside the church. Orthodoxy recognizes that other religions may contain truth, to the extent that they are in agreement with Christianity. God is thought to be good, just, and merciful; it would not seem just to condemn someone because they never heard the Gospel message, or were taught a distorted version of the Gospel by heretics. Therefore, the reasoning goes, they must at some point have an opportunity to make a genuine informed decision. Ultimately, those who persist in rejecting God condemn themselves, by cutting themselves off from the ultimate source of all Life, and from the God who is Love embodied. Jews, Muslims, and members of other faiths, then, are expected to convert to Christianity in the afterlife.

Judaism is not a proselytizing religion. Orthodox Judaism deliberately makes it very difficult to convert and become a Jew, and requires a significant and full time effort in living, study, righteousness, and conduct over several years. The final decision is by no means a foregone conclusion. A person cannot become Jewish by marrying a Jew, or by joining a synagogue, nor by any degree of involvement in the community or religion, but only by explicitly undertaking intense, formal, and supervised work over years aimed towards that goal. Some less strict versions of Judaism have made this process somewhat easier but it is still far from common. In the past, scholars understood Judaism to have an evangelistic drive, but today's scholars are inclined to the view that it was often more akin just to "greater openness to converts" rather than active soliciting of conversions. Since Jews believe that one need not be a Jew to approach God, there is no religious pressure to convert non Jews to their faith. Indeed, Scholars have revisited the traditional claims about Jewish proselytizing and have brought forward a variety of new insights. McKnight and Goodman have argued persuasively that a distinction ought to be made between the passive reception of converts or interested Pagans, and an active desire or intent to convert the non Jewish world to Judaism. The Chabad Lubavitch branch of Hasidic Judaism has been an exception to this non proselytizing standard, since in recent decades it has been actively promoting Noahide Laws for gentiles as an alternative to Christianity. By contrast, Christianity is an explicitly evangelistic religion. Christians are commanded by Jesus to "Therefore go and make disciples of all nations". Historically, evangelism has on rare occasions led to forced conversion under threat of death or mass expulsion.

Many Jews view Jesus as one in a long list of failed Jewish claimants to be the Messiah, none of whom fulfilled the tests of a prophet specified in the Law of Moses. Others see Jesus as a teacher who worked with the gentiles and ascribe the messianic claims that Jews find objectionable to his later followers. Because much physical and spiritual violence was done to Jews in the name of Jesus and his followers, and because evangelism is still an active aspect of many churches' activities, many Jews are uncomfortable with discussing Jesus and treat him as a non person. In answering the question "What do Jews think of Jesus", philosopher Milton Steinberg claims, for Jews, Jesus cannot be accepted as anything more than a teacher. "In only a few respects did Jesus deviate from the Tradition," Steinberg concludes, "and in all of them, Jews believe, he blundered." Judaism does not believe that God requires the sacrifice of any human. This is emphasized in Jewish traditions concerning the story of the Akedah, the binding of Isaac. In the Jewish explanation, this is a story in the Torah whereby God wanted to test Abraham's faith and willingness, and Isaac was never going to be actually sacrificed. Thus, Judaism rejects the notion that anyone can or should die for anyone else's sin. Judaism is more focused on the practicalities of understanding how one may live a sacred life in the world according to God's will, rather than a hope of a future one. Judaism does not believe in the Christian concept of hell but does have a punishment stage in the afterlife (i. e. Gehenna, a term that also appears in the New Testament and translated as hell) as well as a Heaven (Gan Eden), but the religion does not intend it as a focus. Judaism views the worship of Jesus as inherently polytheistic, and rejects the Christian attempts to explain the Trinity as a complex monotheism. Christian festivals have no religious significance in Judaism and are not celebrated, but some secular Jews in the West treat Christmas as a secular holiday.

Christians believe that Christianity is the fulfillment and successor of Judaism, retaining much of its doctrine and many of its practices including monotheism, the belief in a Messiah, and certain forms of worship like prayer and reading from religious texts. Christians believe that Judaism requires blood sacrifice to atone for sins, and believe that Judaism has abandoned this since the destruction of the Second Temple. Most Christians consider the Mosaic Law to have been a necessary intermediate stage, but that once the crucifixion of Jesus occurred, adherence to civil and ceremonial Law was superseded by the New Covenant. Some Christians adhere to New Covenant theology, which states that with the arrival of his New Covenant, Jews have ceased being blessed under his Mosaic covenant. This position has been softened or disputed by other Christians, where Jews are recognized to have a special status under the Abrahamic covenant. New Covenant theology is thus in contrast to Dual covenant theology. Some Christians who view the Jewish people as close to God seek to understand and incorporate elements of Jewish understanding or perspective into their beliefs as a means to respect their "parent" religion of Judaism, or to more fully seek out and return to their Christian roots. Christians embracing aspects of Judaism are sometimes criticized as Biblical Judaizers by Christians when they pressure gentile Christians to observe Mosaic teachings rejected by most modern Christians. Commonwealth Theology (CT) asserts that Judeo Christian tensions were exacerbated in the fall of Jerusalem and by the subsequent Jewish Revolt. As a result, early Christian theologies formulated in the Roman capitals of Rome and Constantinople began to include antisemitic attitudes, which have been carried forward and embraced by the Protestant Reformers. Dispensation Theology, formalized in the 1830s by John Darby, holds that "God has not rejected His people whom He foreknew." Dispensationalism, however, maintains that God's special dealings with Israel have been interrupted by the Church Age. Commonwealth Theology, on the other hand, recognizes the continuity of God's "congregation in the wilderness" as presently consisting of the Jews (house of Judah) and the Nations (Gentiles), among whom are abiding the historically scattered Northern Kingdom (house of Israel). Commonwealth Theology views the Jews as already included in Commonwealth of Israel even while in unbelief, but nevertheless unsaved in their unbelieving state. is a process that began on the Day of Pentecost. The full realization of the "one new man" created through the peace (between the Jews and "you Gentiles") made by his cross will take place in Ezekiel's two sticks made one, when both houses of Israel will be united under the Kingdom of David.

Some scholars have found evidence of continuous interactions between Jewish Christian and rabbinic movements from the mid to late second century CE to the fourth century CE. Of particular importance is the figure of James the brother of Jesus, the leader of the Christian Church in Jerusalem until he was killed in the year 62, who was known for his righteous behavior as a Jew, and set the terms of the relationship between Jewish Christians and Gentile Christians in dialogue with Paul. To him is attributed a letter which emphasizes the view that faith must be expressed in works. The neglect of this mediating figure has often damaged Christian Jewish relations. Modern scholarship is engaged in an ongoing debate over which term should be used as the proper designation for Jesus' first followers. Many scholars believe that the term Jewish Christians is anachronistic given the fact that there is no consensus on the date of the birth of Christianity. The very concepts of Christianity and Judaism can be seen as essentializing, since these are changing and plural traditions. Clearly, the first Christians would not have believed that they were exchanging one religion for another, because they believed that the resurrection of Jesus was the fulfillment of Jewish prophecies, and they believed that the mission to the gentiles which was initiated by Saul (Paul of Tarsus) was a secondary activity. Some modern scholars have suggested that the designations "Jewish believers in Jesus" and "Jewish followers of Jesus" better reflect the original context.

On 31 August 2017, representatives of the Conference of European Rabbis, the Rabbinical Council of America, and the Commission of the Chief Rabbinate of Israel issued and presented the Holy See with a statement entitled Between Jerusalem and Rome. The document pays particular tribute to the Second Vatican Council's Declaration Nostra Aetate, whose fourth chapter represents the "Magna Carta" of the Holy See's dialogue with the Jewish world. The Statement Between Jerusalem and Rome does not hide the theological differences that exist between the two faith traditions while all the same it expresses a firm resolve to collaborate more closely, now and in the future.