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 was not necessary for non-Jewish converts to Christianity. Another major difference is the two religions' conceptions of God. The Christian God consists of three persons of one essence, with the doctrine of the incarnation of the Son in Jesus being of special importance. Judaism emphasizes the Oneness of God and rejects the Christian concept of God in human form. While Christianity recognizes the Hebrew Bible as part of its scriptural canon, Judaism does not recognize the Christian New Testament.
The Epistle to the Hebrews is one of the books of the New Testament.
The New Testament (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 Christianity. The New Testament's background, the first division of the Christian Bible, is called the Old Testament, which is based primarily upon the Hebrew Bible; together they are regarded as sacred scripture by Christians.
In Christian theology, "legalism" is a pejorative term applied to the idea that "by doing good works or by obeying the law, a person earns and merits salvation."
Antinomianism is any view which rejects laws or legalism and argues against moral, religious or social norms, or is at least considered to do so. The term has both religious and secular meanings.
In Christianity, Jesus is the Son of God as written in the Bible's New Testament, and in mainstream Christian denominations he is God the Son, the second Person in the Trinity. Christians believe him to be the messiah prophesied in the Bible's Old Testament. Through Jesus's crucifixion and resurrection, Christians believe that God offers humans salvation and eternal life, with Jesus's death atoning for all sin, thus making humanity right with God.
The following outline is provided as an overview of and topical guide to Christian theology:
Pauline Christianity or Pauline theology, otherwise referred to as Gentile Christianity, is the theology and form of Christianity which developed from the beliefs and doctrines espoused by the Hellenistic-Jewish Apostle Paul through his writings and those New Testament writings traditionally attributed to him. Paul's beliefs were rooted in the earliest Jewish Christianity, but they deviated from this Jewish Christianity in their emphasis on inclusion of the Gentiles into God's New Covenant and in his rejection of circumcision as an unnecessary token of upholding the Mosaic Law.
"The law of Christ" is a New Testament phrase. The related Bible verses are in the Pauline epistles at Galatians 6:2 and parenthetically at 1 Corinthians 9:21.
The doctrine of the Trinity, considered the core of Christian theology by Trinitarians, is the result of continuous exploration by the church of the biblical data, thrashed out in debate and treatises, eventually formulated at the First Council of Nicaea in AD 325 in a way they believe is consistent with the biblical witness, and further refined in later councils and writings. The most widely recognized Biblical foundations for the doctrine's formulation are in the Gospel of John, which possess ideas that originate in Platonism and Greek philosophy.
The roles of women in Christianity have varied since its founding. Women have played important roles in Christianity especially in marriage and in formal ministry positions within certain Christian denominations, and parachurch organizations. In 2016, it was estimated that 52–53 percent of the world's Christian population aged 20 years and over was female, with this figure falling to 51.6 percent in 2020. The Pew Research Center studied the effects of gender on religiosity throughout the world, finding that Christian women in 53 countries are generally more religious than Christian men, while Christians of both genders in African countries are equally likely to regularly attend services.
The Mosaic covenant or Law of Moses – which Christians generally call the "Old Covenant" – played an important role in the origins of Christianity and has occasioned serious dispute and controversy since the beginnings of Christianity: note for example Jesus' teaching of the Law during his Sermon on the Mount and the circumcision controversy in early Christianity.
Interpretations of the law in the Bible within the Seventh-day Adventist Church form a part of the broader debate regarding biblical law in Christianity. Adventists believe in a greater continuation of laws such as the law given to Moses in the present day than do most other Christians. In particular, they believe the 10 Commandments still apply to today, including the Sabbath in particular.
This is a glossary of terms used in Christianity.
Paul the Apostle has been placed within Second Temple Judaism by recent scholarship since the 1970s. A main point of departure with older scholarship is the understanding of Second Temple Judaism; the covenant with God and the role of works as a means to either gain or keep the covenant.
The following outline is provided as an overview of and topical guide to Christianity:
Christian theology is the study – theology – of Christian belief and practice. Such study concentrates primarily upon the texts of the Old Testament and of the New Testament, as well as on Christian tradition. Christian theologians use biblical exegesis, rational analysis and argument. Theologians may undertake the study of Christian theology for a variety of reasons, such as in order to:
While most Christian theology reflects the view that at least some Mosaic Laws have been set aside under the New Covenant, there are some theology systems that view the entire Mosaic or Old Covenant as abrogated in that all of the Mosaic Laws are set aside for the Law of Christ.
New Covenant theology is a Christian theological position teaching that the person and work of Jesus Christ is the central focus of the Bible. One distinctive assertion of this school of thought is that Old Testament Laws have been abrogated or cancelled with Jesus' crucifixion, and replaced with the Law of Christ of the New Covenant. It shares similarities with, and yet is distinct from, dispensationalism and Covenant theology.
For the majority of Christian denominations, the Holy Spirit, or Holy Ghost, is believed to be the third person of the Trinity, a triune God manifested as God the Father, God the Son, and God the Holy Spirit, each being God. Nontrinitarian Christians, who reject the doctrine of the Trinity, differ significantly from mainstream Christianity in their beliefs about the Holy Spirit. In Christian theology, pneumatology is the study of the Holy Spirit. Due to Christianity's historical relationship with Judaism, theologians often identify the Holy Spirit with the concept of the Ruach Hakodesh in Jewish scripture, on the theory that Jesus was expanding upon these Jewish concepts. Similar names, and ideas, include the Ruach Elohim, Ruach YHWH, and the Ruach Hakodesh. In the New Testament it is identified with the Spirit of Christ, the Spirit of Truth, the Paraclete and the Holy Spirit.