Flood myth

Flood myths, accounts of a great deluge that destroys humanity with a small number of survivors, are among the most widely distributed narratives in the world, attested across the Near East, Greece, India, China, Southeast Asia, the Americas and Oceania.

The Mesopotamian and biblical versions are the most closely related, and their relationship is one of the best-documented cases of literary dependence in ancient literature. The Sumerian Ziusudra story, the Old Babylonian Atrahasis, and the version incorporated as tablet XI of the Epic of Gilgamesh, in which Utnapishtim tells Gilgamesh how he survived and was granted immortality, share with Genesis 6-9 a sequence of specific elements: a divine decision to destroy humanity, a warned survivor, a boat built to given dimensions, animals taken aboard, the flood, the grounding on a mountain, birds released to test for dry land, and a sacrifice on disembarking to which the gods respond by gathering. George Smith's identification of the Gilgamesh flood tablet in 1872 caused a sensation precisely because the parallel was undeniable.

Scholars generally hold that the biblical writers knew the Mesopotamian tradition and reworked it, and the reworking is where the theological interest lies. In Atrahasis the gods send the flood because humanity has become too numerous and noisy for them to sleep, and one god betrays the decision behind his colleagues' backs; the gods afterwards swarm around the sacrifice like flies because they have been starved of offerings. In Genesis the flood is a moral judgement by a single God who announces it in advance, and it concludes with a covenant undertaking never to repeat it, with the rainbow as its sign. The narrative shape is shared and the theology is deliberately different.

Other traditions have their own versions: Deucalion and Pyrrha in Greek myth; Manu warned by a fish in Indian material from the Shatapatha Brahmana onward; and the Chinese tradition, distinctive in that the flood is controlled rather than survived, Yu the Great dredging channels for thirteen years and passing his own door three times without entering.

The distribution has been explained in three ways: as diffusion from a single narrative source; as memory of real events, whether large river floods, the inundation of the Black Sea basin, or post-glacial sea-level rise; or as the natural product of a hazard that most settled human populations have experienced, flooding being the most widespread of natural disasters. Geologists and archaeologists have found no evidence of a single global flood, and the mainstream scientific and scholarly position is that these myths do not record one event. Some religious communities maintain a global flood as historical fact, and the disagreement is long-standing and unlikely to be resolved by further evidence.

The flood narrative's relation to the physical earth has its own separate history from its relation to other ancient texts. Early modern natural philosophers, including figures within the Royal Society, took a global deluge as a live geological hypothesis and looked for its traces in fossils and strata; "diluvialism" was a working scientific position, not yet a fringe one, well into the early nineteenth century.

Two developments ended that. Geologists including Charles Lyell argued from the 1830s that the earth's strata record gradual, uniform processes over vast spans rather than a single catastrophic inundation, and the uniformitarian account displaced diluvialism within the emerging discipline. Separately, biblical scholarship's source-critical work on Genesis, associating the flood account with more than one underlying strand woven together, complicated the assumption that Genesis 6-9 was reporting a single eyewitness memory rather than a composite text.

Neither development ended the claim as a matter of religious conviction. A minority of conservative Protestant Christians maintains "flood geology," associated with the young-earth creationist movement that grew from the mid-twentieth century, holding that a literal global flood explains major geological features including most sedimentary rock and the fossil record. Geological and biological sciences do not support this reading, and mainstream biblical scholarship treats the underlying account as composite; the position persists chiefly as a doctrinal commitment within specific denominations and institutions rather than as a claim argued on geological evidence within the earth sciences themselves.