Compare Religions: Christianity, Judaism, and Islam

Judaism is the oldest of the three Abrahamic religions, rooted in the covenant between God and the people of Israel as recorded in the Hebrew Bible (Tanakh). Central to Jewish theology is strict monotheism, Torah observance, and the expectation of a future messiah who has not yet come. The concept of distinguishing the holy from the profane is foundational — Leviticus instructs the priests "that ye may put difference between holy and unholy, and between unclean and clean" Leviticus 10:10, reflecting a religion deeply concerned with ritual purity and ethical boundaries.

Judaism does not accept Jesus of Nazareth as the Messiah. Mainstream rabbinic tradition, codified by scholars like Maimonides (12th century), holds that the Messiah must fulfill specific criteria — rebuilding the Temple, gathering all Jews to Israel, ushering in world peace — none of which Jesus accomplished. The New Testament portrayal of Jesus as "Christ the King of Israel" Mark 15:32 is, from a Jewish perspective, a theological claim that lacks the required prophetic fulfillment. Jewish faith centers on communal practice, Talmudic study, and direct relationship with God without a mediating figure.

Christianity emerged from Second Temple Judaism in the 1st century CE and is defined above all by the person and work of Jesus Christ. Paul of Tarsus, writing around 55 CE, made the resurrection the irreducible core of the faith: "if Christ be not risen, then is our preaching vain, and your faith is also vain" 1 Corinthians 15:14. Without the resurrection, Paul argues, believers remain in their sins 1 Corinthians 15:17 — a claim that sets Christianity apart from every other world religion.

Christ is understood not merely as a teacher or prophet but as the very "power of God and the wisdom of God" 1 Corinthians 1:24, a formulation that became the basis for later Trinitarian theology developed at Nicaea (325 CE). The proclamation of Jesus Christ — described by Paul as consistent and unambiguous, "not yea and nay, but in him was yea" 2 Corinthians 1:19 — is presented as a universal message for both Jews and Gentiles. Scholars like N.T. Wright have argued extensively that the bodily resurrection is historically defensible, while others like Bart Ehrman contest this; the debate remains live in academic theology.

Christian communities, described as "churches of God" 1 Corinthians 11:16, have historically organized around sacraments, creeds, and scripture. The faith spread across the Roman Empire and today encompasses roughly 2.4 billion adherents across Catholic, Orthodox, and Protestant traditions, each with distinct emphases but united on the centrality of Christ's resurrection 1 Corinthians 15:14.

Islam, founded through the prophethood of Muhammad in 7th-century Arabia, is the youngest of the three Abrahamic faiths and claims to restore the original, uncorrupted monotheism of Abraham. Like Judaism, it maintains an absolute, uncompromising monotheism (tawhid) that explicitly rejects the Christian doctrine of the Trinity. Jesus (Isa) is honored as one of the greatest prophets and is even called the Messiah in the Quran (Surah 3:45), but he is emphatically not divine.

Islam's most direct point of contention with Christianity concerns the crucifixion. The Quran (Surah 4:157) states that Jesus was not crucified — it only appeared so — which directly contradicts the Christian account of the events at Golgotha Mark 15:32. Since Islam denies the crucifixion, it also denies the resurrection, making Paul's argument that faith is "vain" without the risen Christ 1 Corinthians 15:17 a non-issue from an Islamic standpoint. Islamic scholar Ibn Kathir (14th century) interpreted the Quranic verse as meaning a substitute was crucified in Jesus's place.

Islam does share with Christianity the conviction that the message of God's prophets — including Jesus — was meant for all humanity, not one ethnic group alone. However, Muslims believe the Gospel (Injil) given to Jesus was later corrupted, and that the Quran represents God's final, preserved word. The Muslim community (ummah) functions analogously to the Christian concept of the church 1 Corinthians 11:16, as a gathered community of believers accountable to divine law.