During the recent "Great Debate" about wether or not science has rendered religion obsolete, Ian Hutchinson, arguing for the theist side, fished out an old chestnut, one often used by creationists, to whit that the Genesis 1 creation myth differed from all others in that, in every other creation myth the gods and everything else arose out of a pre-existing abyss or chaos, often a universal sea. Only the God of the Bible, said Hutchinson, created the universe rather than being part of it. The evidence for this is rather slim. It consists of Gen. 1:1:
In the beginning God created the heavens and the earth.
Since Gen. 1:1 doesn't specify that God made everything out of pre-existing primordial stuff, this has given rise to the doctrine of creation ex nihilo, "out of nothing."
While it's true that in most of the mythologies of the world the gods rise out of a pre-existing material, I can see three objections to Hutchinson's claim of the unique quality of Genesis 1:
1) First, saying that God created the heavens and the earth doesn't mean he created them ex nihilo.