Christianity began as a movement within

Second Temple Judaism Second Temple Judaism refers to the Jewish religion as it developed during the Second Temple period, which began with the construction of the Second Temple around 516 BCE and ended with the Roman siege of Jerusalem in 70 CE. The Second Temple p ...

, but the two religions gradually diverged over the first few centuries of the

Christian Era The terms (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term is Medieval Latin and means 'in the year of the Lord', but is often presented using "our Lord" instead of "the Lord", ...

. Differences of opinion vary between denominations in both religions, but the most important distinction is Christian acceptance and Jewish non-acceptance of

Jesus Jesus, likely from he, יֵשׁוּעַ, translit=Yēšūaʿ, label=Hebrew/Aramaic ( AD 30 or 33), also referred to as Jesus Christ or Jesus of Nazareth (among other names and titles), was a first-century Jewish preacher and religiou ...

as the

Messiah In Abrahamic religions, a messiah or messias (; , ; , ; ) is a saviour or liberator of a group of people. The concepts of '' mashiach'', messianism, and of a Messianic Age originated in Judaism, and in the Hebrew Bible, in which a ''mashiach ...

prophesized in the

Hebrew Bible The Hebrew Bible or Tanakh (;"Tanach"
''Random House Webster's Unabridged Dictionary''. Hebrew: ''Tān ...

and Jewish tradition. Early Christianity also distinguished itself by determining that observance of

halakha ''Halakha'' (; he, הֲלָכָה, ), also transliterated as ''halacha'', ''halakhah'', and ''halocho'' ( ), is the collective body of Jewish religious laws which is derived from the written and Oral Torah. Halakha is based on biblical comm ...

(Jewish law) was not necessary for non-Jewish converts to Christianity. Another major difference is the two religions' coneptions of God. The Christian God consists of three persons of one essence (Father, Son and Holy Spirit), with the doctrine of the

incarnation Incarnation literally means ''embodied in flesh'' or ''taking on flesh''. It refers to the conception and the embodiment of a deity or spirit in some earthly form or the appearance of a god as a human. If capitalized, it is the union of divinit ...

of the Son in Jesus being of special importance. Judaism emphasizes the

Oneness of God Tawhid ( ar, , ', meaning "unification of God in Islam (Allāh)"; also romanized as ''Tawheed'', ''Tawhid'', ''Tauheed'' or ''Tevhid'') is the indivisible oneness concept of monotheism in Islam. Tawhid is the religion's central and single m ...

and rejects the Christian concept of God in human form. While Christianity recognizes the

Hebrew Bible The Hebrew Bible or Tanakh (;"Tanach"
''Random House Webster's Unabridged Dictionary''. Hebrew: ''Tān ...

(called the

Old Testament The Old Testament (often abbreviated OT) is the first division of the Christian biblical canon, which is based primarily upon the 24 books of the Hebrew Bible or Tanakh, a collection of ancient religious Hebrew writings by the Israelites. The ...

by Christians) as part of its scriptural canon, Judaism does not recognize the Christian

New Testament The New Testament grc, Ἡ Καινὴ Διαθήκη, transl. ; la, Novum Testamentum. (NT) is the second division of the Christian biblical canon. It discusses the teachings and person of Jesus, as well as events in first-century Christ ...

. The relative importance of belief and practice constitute an important area of difference. Most forms of

Protestant Christianity Protestantism is a branch of Christianity that follows the theological tenets of the Protestant Reformation, a movement that began seeking to reform the Catholic Church from within in the 16th century against what its followers perceived to b ...

emphasize correct belief (or orthodoxy), focusing on the

New Covenant The New Covenant (Hebrew '; Greek ''diatheke kaine'') is a biblical interpretation which was originally derived from a phrase which is contained in the Book of Jeremiah ( Jeremiah 31:31-34), in the Hebrew Bible (or the Old Testament of the C ...

mediated ''Mediated: How the Media Shapes Your World and the Way You Live in It'' is a non-fiction book by anthropologist Thomas de Zengotita published in 2005 by Bloomsbury about the effect of the media in the Western world. Summary ''Mediated'' ai ...

through

Christ Jesus, likely from he, יֵשׁוּעַ, translit=Yēšūaʿ, label= Hebrew/Aramaic ( AD 30 or 33), also referred to as Jesus Christ or Jesus of Nazareth (among other names and titles), was a first-century Jewish preacher and religi ...

, as recorded in the

. Judaism places emphasis on correct conduct (or

orthopraxy In the study of religion, orthopraxy is correct conduct, both ethical and liturgical, as opposed to faith or grace. Orthopraxy is in contrast with orthodoxy, which emphasizes correct belief. The word is a neoclassical compound— () meaning ' ...

), focusing on the

Mosaic covenant The Mosaic covenant (named after Moses), also known as the Sinaitic covenant (after the biblical Mount Sinai), refers to a covenant between God and the Israelites, including their proselytes, not limited to the ten commandments, nor the event ...

, as recorded in the

Torah The Torah (; hbo, ''Tōrā'', "Instruction", "Teaching" or "Law") is the compilation of the first five books of the Hebrew Bible, namely the books of Genesis, Exodus, Leviticus, Numbers and Deuteronomy. In that sense, Torah means the s ...

and

Talmud The Talmud (; he, , Talmūḏ) is the central text of Rabbinic Judaism and the primary source of Jewish religious law ('' halakha'') and Jewish theology. Until the advent of modernity, in nearly all Jewish communities, the Talmud was the cen ...

. Mainstream

Roman Catholicism The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

occupies a middle position, stating the both faith and works are factors in a person's salvation. Some schools of thought within Catholicism, such as

Franciscanism , image = FrancescoCoA PioM.svg , image_size = 200px , caption = A cross, Christ's arm and Saint Francis's arm, a universal symbol of the Franciscans , abbreviation = OFM , predecessor = , ...

and

liberation theology Liberation theology is a Christian theological approach emphasizing the liberation of the oppressed. In certain contexts, it engages socio-economic analyses, with "social concern for the poor and political liberation for oppressed peoples". ...

, explicitly favor orthopraxy over orthodoxy.

Praxis Praxis may refer to: Philosophy and religion * Praxis (process), the process by which a theory, lesson, or skill is enacted, practised, embodied, or realised *Praxis model, a way of doing theology * Praxis (Byzantine Rite), the practice of fai ...

is of central importance to

Eastern Christianity Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in Eastern Europe, Southeastern Europe, Asia Minor, the Caucasus, Northeast Africa, the Fertile Crescent a ...

as well, with Saint

Maximus the Confessor Maximus the Confessor ( el, Μάξιμος ὁ Ὁμολογητής), also spelt Maximos, otherwise known as Maximus the Theologian and Maximus of Constantinople ( – 13 August 662), was a Christian monk, theologian, and scholar. In his ea ...

going as far as to say that "theology without action is the theology of demons." Christian conceptions of right practice vary (e.g., liberation theology's praxis of the

preferential option for the poor The option for the poor, or the preferential option for the poor, is one of the newer principles of the Catholic social teaching, as articulated in the latter half of the 20th century; it is also a theological emphasis in Methodism. The concept w ...

; the

Eastern Orthodox Church The Eastern Orthodox Church, also called the Orthodox Church, is the second-largest Christian church, with approximately 220 million baptized members. It operates as a communion of autocephalous churches, each governed by its bishops vi ...

's practices of

fasting Fasting is the abstention from eating and sometimes drinking. From a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (see " Breakfast"), or to the metabolic state achieved after co ...

hesychasm Hesychasm (; Greek: Ησυχασμός) is a contemplative monastic tradition in the Eastern Orthodox Church in which stillness (''hēsychia'') is sought through uninterrupted Jesus prayer. While rooted in early Christian monasticism, it took ...

, and

asceticism Asceticism (; from the el, ἄσκησις, áskesis, exercise', 'training) is a lifestyle characterized by abstinence from sensual pleasures, often for the purpose of pursuing spiritual goals. Ascetics may withdraw from the world for their p ...

), but differ from Judaism in that they are not based on following halakha or any other interpretation of the Mosaic covanent. 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 Prayer is an invocation or act that seeks to activate a rapport with an object of worship through deliberate communication. In the narrow sense, the term refers to an act of supplication or intercession directed towards a deity or a deified ...

and ethical actions.

Jewish self-identification

Judaism's purpose is to carry out what it holds to be the

covenant Covenant may refer to: Religion * Covenant (religion), a formal alliance or agreement made by God with a religious community or with humanity in general ** Covenant (biblical), in the Hebrew Bible ** Covenant in Mormonism, a sacred agreement b ...

between

God In monotheistic thought, God is usually viewed as the supreme being, creator, and principal object of faith. Swinburne, R.G. "God" in Honderich, Ted. (ed)''The Oxford Companion to Philosophy'', Oxford University Press, 1995. God is typically ...

and the

Jewish people Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...

. The

(), both

written Writing is a medium of human communication which involves the representation of a language through a system of physically inscribed, mechanically transferred, or digitally represented symbols. Writing systems do not themselves constitute ...

and

oral The word oral may refer to: Relating to the mouth * Relating to the mouth, the first portion of the alimentary canal that primarily receives food and liquid **Oral administration of medicines ** Oral examination (also known as an oral exam or ora ...

, 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 a