Lilith, the Demoness in this profile picture us redheads has not been demonized. Great.
Flood myths have been developed in the early stages of Western culture in a number of different cultures, although they are largely copies of each other. The oldest of these probably is the Sumerian creation myth or “Eridu Genesis”, whose hero is Ziusudra.
The gods are determined to destroy humanity, but Enki (or Ea), the god of water, craft, intellect, and creation, warns Ziusudra that he will build a great ship on which he will survive a seven-day, seven-night flood. The other two main gods Anu (or An) and Enlil do not like this, but eventually pardon Ziusudra and give him eternal life in Dilmun, or paradise.
The most comprehensive surviving Mesopotamian story of the flood is the Atrahasis epic, which tells the story of the hero of the same name (1646–1626 BC). It dates back to the post-Hammurab era of Babylonian culture, but is largely similar in content to Eridu Genesis. The most famous Babylonian flood story is in the Gilgamesh epic.
The story dates back to a long Sumerian tradition, but a standard version of the epic has been compiled between 1300 and 1000 BC. between. In Table 11 of the Gilgamesh epic, the hero encounters Utnapishtim, who tells him of the flood that has resulted in him becoming immortal. Gilgamesh also strives for immortality, but fails in both of the tasks set by Utnapishtim. In the end, he realizes that people only achieve immortality through culture and civilization.
Utnapishtim’s story in the Gilgamesh epic is in places almost word for word from Atrahasis. Another person who ended up in Mesopotamian mythology in Greece and also in Christian mythology is the ferryman Urshanabi, who takes Gilgamesh to Utnapishtim. The famous ferryman in Greek mythology is Kharon, he transports people to Hades across the Styx River. In Dante Alighier’s Divine Play, Kharon is in an almost similar position.
It can be said that including the Old Testament, these stories seem to come from Sumerian texts, via a "broken telephone".