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Christianity and Judaism

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Through Christianity, Religion and Middle East

Christianity began as a movement within Second Temple Judaism, and the two religions gradually diverged over the first few centuries of the Christian era. Today, both religions have denominational differences, but the main distinction is that Christianity recognizes Jesus as the Messiah foretold in the Hebrew Bible, whereas Judaism maintains that the Messiah has not yet arrived and that the era of prophecy concluded early in the Second Temple period.

Early Christianity distinguished itself by determining that observance of Jewish law (Hebrew: הֲלָכָה, romanized: Hălāḵā, lit. 'the Way')—at least in Pauline Christianity—was unnecessary for non-Jewish converts to Christianity. Another fundamental difference is the two religions' conceptions of God. Most Christian denominations believe in a triune God—its members being known as the Father, Son, and Holy Spirit—with the doctrine of the incarnation of the Son in Jesus being of special importance. In contrast, Judaism believes in and emphasizes the oneness of God and rejects the Christian concept of God in human form, let alone a divided one.

Christianity recognizes the Hebrew Bible (referred to as the Old Testament by Christians) as part of its scriptural canon while Judaism does not recognize the Christian New Testament as scripture. Judaism is also heavily informed by the Talmud, which, though not scripture, is still considered foundational to normative Judaism.

The relative importance of 'correct belief' (orthodoxy) versus 'correct practice' (orthopraxy) constitutes another important area of difference. Most forms of Christianity emphasize orthodoxy, focusing on the so-called New Covenant as mediated by Jesus, the Christ, as described in the New Testament. Judaism has traditionally been thought to emphasize orthopraxy, stressing the immutability of the covenants made between God and the Jewish people and the ongoing dialogue between Jews and God through the prophets.

In Christianity, good works would naturally follow from a person's correct belief, but do not contribute to a person's salvation. Some Catholic traditions, such as those of the Franciscans and liberation theology, explicitly value orthopraxy, and praxis is also of central importance in Eastern Christianity, with Maximus the Confessor going so far as to say that "theology without action is the theology of demons."

Christian conceptions of orthopraxy vary (e.g., Catholic social teaching and its preferential option for the poor; the Eastern Orthodox Church's practices of fasting, hesychasm, and asceticism; and the Protestant work ethic of Calvinists and others) but differ from Judaism in that they are not based on Halakha or interpretations of God's dialogue with the Jewish people.

While more liberal Jewish movements may not mandate observance of Halakha, Jewish life remains centered on individual and collective participation in an eternal dialogue with God through tradition, rituals, daily prayer, and ethical actions.

Jewish self-identification

Judaism's purpose, found primarily in the books of Exodus, Leviticus, Numbers, and Deuteronomy, is to carry out the Mosaic covenant made between God and the Jewish people and its proselytes (גֵּרֵי צֶדֶק, gréi ṣedek, 'righteous converts'). The Torah (תּוֹרָה, 'Teaching')—comprising the Written Torah (תּוֹרָה שֶׁבִּכְתָב, Tōrā šebbīḵṯāv) and Oral Torah (תּוֹרָה שֶׁבְּעַל־פֶּה, Tōrā šebbəʿal-pe)—tells the story of this covenant and provides Jews with the terms of the covenant.

The Oral Torah contains the primary and maturing guide for Jews to live out the covenant, as expressed, for example, by Rabbi Yohanan in tractate Gittin 60b:6 in the Talmud. Thus, the Oral Torah is intended to guide Jews toward living holy and godly lives, 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 kedusha, 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 allows the Jewish people as a community to strive and, over the course of history, 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." It additionally allows them to fulfill 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. His Sermon on the Mount is considered by some Christian scholars to be the proclamation of the New Covenant ethics, in contrast to the Mosaic Covenant of Moses from Mount Sinai.

Some scholars, like Margaret Barker, propose that early Christianity has roots in First Temple Israelite religion, which is dubbed the "Temple Theology". Barker's work has been criticized for engaging in parallelomania and failing to engage in the broader scholarly literature, but it has gained some religious and academic support.

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