If you take the idea of God in the Bible as a metaphor for any nascent, formative just-created intelligence, is that not how we all create the universe. We divide the firmament up from the waters of the abyss, and the key to how to do this is in the first line: in the beginning, there was the word. By giving sky one word, the ground into another, we break the universe down into manageable things that we can interact with through language.