Three Faiths, One Abraham
The Abrahamic religions — Judaism, Christianity, and Islam — trace their origins to the figure of Abraham, a patriarch claimed by all three traditions as a foundational ancestor. Together, these three faiths account for more than half the world's population.
But the relationship between them is not a simple family tree with one trunk and three branches.
It is a centuries-long entanglement of shared texts, competing interpretations, and divergent theological commitments — three distinct traditions built from overlapping source material. All three affirm monotheism. All three regard Abraham as a figure of central importance. All three preserve narratives about creation, flood, Moses, and divine covenant that share recognizable literary DNA.
The similarities, though, can obscure how differently each tradition reads the shared material — and how much of what looks like common ground is actually contested territory, reinterpreted across centuries to serve distinct theological purposes.
What connects these three faiths is not just a shared ancestor but a shared textual environment. The Torah, the Christian Bible, and the Quran do not merely mention the same figures — they engage with the same stories, sometimes retelling them in ways that reveal sharp theological disagreements beneath the surface of apparent agreement.
| Figure / Story / Concept | Torah / Hebrew Bible | Christian Bible | Quran |
|---|---|---|---|
| Abraham (Ibrahim) | Patriarch of Israel; covenant with God (Genesis 12-25) | Patriarch; model of faith (Romans 4, Galatians 3) | Prophet and builder of the Kaaba; submitted to God's will (Sura 2, 14, 37) |
| Moses (Musa) | Lawgiver; led Israel from Egypt; received Torah at Sinai (Exodus-Deuteronomy) | Lawgiver; foreshadows Christ (Acts 7, Hebrews 3) | Prophet sent to Pharaoh; received the Tawrat (Sura 2, 7, 20, 28) |
| Jesus (Isa) | Not present | Son of God; crucified and resurrected; central figure of faith (Gospels, Paul's letters) | Prophet and messiah born of a virgin; not crucified; not divine (Sura 3, 4, 5, 19) |
| Mary (Maryam) | Not present | Mother of Jesus; virgin birth (Matthew 1, Luke 1-2) | Mother of Isa; an entire sura bears her name (Sura 19); most-named woman in the Quran |
| Creation narrative | Two accounts: Genesis 1 (six days) and Genesis 2 (garden of Eden) | Inherits Hebrew Bible accounts; creation theology in John 1, Colossians 1 | God created heavens and earth in six periods; no garden temptation sequence as in Genesis (Sura 7, 11, 41) |
| Flood narrative | Noah and the ark; global flood; covenant with rainbow (Genesis 6-9) | Noah as model of faith and warning (Matthew 24, 1 Peter 3, 2 Peter 2) | Nuh sent to his people; local flood; his son drowned (Sura 11, 71) |
| Adam and Eve | First humans; garden, serpent, exile (Genesis 2-3) | Adam as type of Christ; fall and redemption (Romans 5, 1 Corinthians 15) | Adam and his wife both err; both repent; no doctrine of original sin (Sura 2, 7, 20) |
The pattern is consistent: three traditions share narrative raw material, but each shapes it to serve a different theological architecture.
The Hebrew Bible's Adam and Eve story grounds a narrative about exile and covenant. Paul reads it as the fall that necessitates Christ's redemption. The Quran tells the same story without original sin — Adam repents, and God forgives.
Same characters. Different theology. The comparison is where the scholarship begins.
Scripture Across Traditions
The scriptures of Judaism, Christianity, and Islam are not three separate libraries that happen to share a shelf. They are texts in active conversation — sometimes explicit, sometimes implicit — with each other and with a common body of earlier material.
The most direct textual relationship exists between the Hebrew Bible and the Christian Old Testament. The question of how the Old Testament relates to the Torah is more complex than most people realize: the Christian Old Testament contains the same core texts as the Jewish Tanakh but arranges them differently. Catholic and Orthodox traditions include additional books that the Protestant and Jewish canons exclude.
The texts are largely the same. The anthology is not.
That difference in arrangement and scope shapes how each tradition reads the shared material.
The Quran's relationship to the Bible is different in kind. It does not reproduce biblical narratives verbatim — it alludes to them, retells them in compressed or reframed form, and frequently assumes the audience already knows the earlier version. A detailed comparison of the Quran and the Bible reveals that figures like Abraham, Moses, Joseph, and David appear in both, but the Quran gives them different emphases, different dialogue, and different theological framing.
The question of whether the Quran is older than the Bible has a straightforward chronological answer — the Hebrew Bible's earliest texts predate the Quran by well over a millennium. But the Quran's own self-understanding is that it confirms and corrects earlier revelation, not that it follows it.
The figure of Jesus in the Quran illustrates how the same historical figure can occupy fundamentally different roles across traditions. The Quran affirms Jesus as a prophet, as the messiah, and as born of a virgin — but explicitly denies his crucifixion and his divinity.
These are not minor disagreements. They represent distinct theological architectures built around shared source material. The historical study of monotheistic religions traces how these architectures developed — from the earliest experiments in exclusive worship of one God through the distinct monotheisms of the Abrahamic traditions as they exist today.
Later textual relationships extend the pattern. The Book of Mormon's relationship to the Bible represents a 19th-century continuation of the same phenomenon — a new text that claims continuity with the biblical tradition while introducing its own narrative framework and theological claims.
Before the Bible: Ancient Near Eastern Roots
The literary traditions behind the Hebrew Bible did not emerge in isolation.
Creation narratives, flood stories, divine councils, and law codes circulated across Mesopotamia, Egypt, and the Levant for millennia before the earliest biblical texts were composed. The biblical authors knew this material. Their original audiences did too.
The relationship between Enuma Elish and Genesis is one of the most studied examples. The Enuma Elish, a Babylonian creation epic dating to at least the 12th century BCE, describes the god Marduk defeating the chaos-monster Tiamat and fashioning the world from her body. Genesis 1 describes God creating order from a formless deep — and the Hebrew word for that deep, tehom, is linguistically related to the Akkadian Tiamat.
Hermann Gunkel first identified these connections in 1895. The scholarly conversation has continued ever since.
The relationship is not simple borrowing. It is a shared cultural vocabulary that different authors used to make different theological arguments.
The broader world of the Babylonian creation myth extends well beyond Enuma Elish. The Atrahasis epic, composed around 1700 BCE, contains a flood narrative with striking structural parallels to Genesis — divine decision, single righteous survivor, boat, birds sent out, sacrifice afterward. The Gilgamesh epic shares even more specific details. These texts were circulating centuries before the biblical versions took their present form.
The Genesis authors were not writing in a vacuum. They were composing within a rich literary environment, and their choices about what to keep, what to change, and what to reframe reveal their theological priorities with remarkable clarity.
The ancient Near Eastern context makes the biblical texts more readable, not less.