God decided to do something BIG, and wanted to look at different aspects of the situation from different viewpoints. So God took the differing viewpoints from inside the Almighty psyche and became them, the Archangels.

At the beginning of the game, there is nothing in the universe. All that exists is infinite void. Since there is nothing here, there is nothing to go and see, until you make it. This is the reason for your existence, the reason for God having made you / become you. You are going to make a universe.

That is, unless you kill each other first.