Why should it surprise us that the narratives recounted in Genesis are also recounted in other Mesopotamian literatures? Indeed, if it could be proven (though it cannot) that the Genesis accounts have their origins in older Sumerian/Babylonian/Assyrian/Akkadian myths, why should that be scandalous? The Holy Spirit inspired humans with cultures, histories and memories, such as Abraham, who, after all, came from "Ur of the Chaldaeans." That in no way implies that the Hebrew Scriptures are merely equal with their Mesopotamian counterparts or (possibly) sources: The God of the Noah narrative, who acts out of a concern for justice and dismay at human violence and cruelty, is, I think, clearly better than the god (one of many) in the Enuma Elish (Ea, was it?), who floods the world because humans (whose sole purpose is to offer up savory sacrifices to the gods) have become too noisy.