The Old Testament is a compilation, and like every compilation it has a wide variety of contributors who, in turn, have their individual influence upon the final work. It is no surprise, then, that there exist certain parallels between the Enuma Elish, the cosmogony of the Babylonians, and the Book of Genesis, the first part of the Pentateuch section of the Bible. In fact, arguments may be made that other Near Eastern texts, particularly Sumerian, have had their influences in Biblical texts. The extent of this 'borrowing', as it were, is not limited to the Bible; the Enuma Elish has its own roots in Sumerian mythology, predating the Enuma Elish by nearly a thousand years. A superficial examination of this evidence would erroneously lead one to believe that the Bible is somewhat a collection of older mythology re-written specifically for the Semites. In fact, what develops is that the writers have addressed each myth as a separate issue, and what the writers say is that their God surpasses every other.
Each myth or text that has a counterpart in the Bible only serves to further an important idea among the Hebrews: there is but one God, and He is omnipotent, omniscient, and other-worldly; He is not of this world, but outside it, apart from it. The idea of a monotheistic religion is first evinced in recorded history with Judaism, and it is vital to see that instead of being an example of plagiarism, the Book of Genesis is a meticulously composed document that will set apart the Hebrew God from the others before, and after.
To get a clear picture of the way the Book of Genesis may have been formed (because we can only guess with some degree of certainty), we must place in somewhere in time,