What Do the Abrahamic Religions Have in Common? Judaism, Christianity & Islam Compared

Judaism regards Abraham as the founding patriarch of the Jewish people, the first to enter into a binding covenant with the one God — a covenant later renewed with Isaac and Jacob Psalms 105:9. The Hebrew Bible records God as 'the God of Abraham,' a title that anchors Jewish identity across millennia Genesis 31:53. This covenantal relationship is understood as the bedrock of Jewish peoplehood, law, and worship.

Central to Jewish practice is the observance of commandments (mitzvot) given through Moses, including the Sabbath, which the Torah describes as 'holy unto you' Exodus 31:14. Scholar Jacob Milgrom (20th century) argued that Sabbath observance is itself a re-enactment of the covenantal order established from creation. The Psalms celebrate the God of Abraham as sovereign over all nations, gathering 'the people of the God of Abraham' Psalms 47:9, suggesting a universal dimension within a particular covenant.

Judaism also preserves the Akedah — the binding of Isaac — as a defining moment of Abrahamic faith, where Abraham's obedience was tested to its limit Genesis 22:7. This narrative is recited in daily morning prayer and on Rosh Hashanah, underscoring how foundational Abraham's story remains in Jewish liturgy and theology.

Christianity inherits the Abrahamic tradition but reinterprets who counts as Abraham's true descendants. The Apostle Paul, writing around 50 CE in his letter to the Galatians, argued explicitly that faith — not ethnic lineage — defines Abrahamic kinship: 'they which are of faith, the same are the children of Abraham' Galatians 3:7. This was a radical theological move that opened the covenant to Gentile believers.

Jesus himself engaged the question of Abrahamic descent directly. In the Gospel of John, he challenged his interlocutors: 'If ye were Abraham's children, ye would do the works of Abraham' John 8:39, suggesting that moral and spiritual conduct, not ancestry alone, determines one's place in the Abrahamic family. Theologian N.T. Wright (b. 1948) has argued this passage reframes covenant membership around Christological allegiance.

Christianity shares with Judaism and Islam the conviction that Abraham worshipped the one true God, 'possessor of heaven and earth' Genesis 14:19, and that this God is the same deity Christians address as Father. The Sabbath tradition, while reinterpreted by most Christians as fulfilled or transformed in Sunday worship, also traces its roots to the same Mosaic covenant that flows from Abrahamic origins Exodus 31:14.

Islam venerates Abraham (Ibrahim) as a hanif — a pure monotheist — and arguably places him at the very center of its theological self-understanding more explicitly than either Judaism or Christianity does. The Quran describes Ibrahim as neither Jew nor Christian but as one who submitted wholly to God, making him the archetypal Muslim. The God he praised as 'possessor of heaven and earth' Genesis 14:19 is identified in Islamic theology as Allah, the same God worshipped by all the prophets.

The story of Abraham's willingness to sacrifice his son — identified in most Islamic tradition as Ishmael rather than Isaac — is commemorated annually during Eid al-Adha, Islam's most significant festival Genesis 22:7. This shared narrative with Judaism and Christianity illustrates a deep structural commonality: all three traditions see Abraham's radical obedience as the model of true faith. Scholar Reza Aslan (b. 1972) has noted that this convergence around Abraham is one of the strongest arguments for an underlying 'Abrahamic' unity.

Islam also affirms that God made a covenant with Abraham that extends through his descendants Psalms 105:9, though Islamic theology holds that this covenant was most perfectly fulfilled through the Prophet Muhammad and the Quran. Prayer five times daily, fasting, and pilgrimage to Mecca — where Abraham is said to have built the Kaaba — all reflect the Abrahamic inheritance that Islam claims as its own.