The Babylonians had their own story, one quite similar to the story of Noah and the flood in the Old Testament Christian Bible and the Torah. A god came to one man, warned him of a impending, worldwide flood, and advised him to build an ark. The man was saved due to his moral constitution, and his story serves as a warning to all others.
Moreover, the Babylonians seem to have acquired their story from the Sumerians, one of the first urban civilizations who existed earlier than 2,000 B.C. I think the Old Testament was written well after 1,000 B.C.
I'm not implying anything. I just think it interesting.
Source: Kenneth W. Harl. World of Byzantium. Lecture 4: Hammurabi's Babylon. 2001. The Teaching Company.
