What was God doing before he created the world?
Blake has an answer to that in his Four Zoas.
It was in his time that it was realized that God had different personalities in the Bible. Blake wrote the Four Zoas as a Prequel to the Bible explaining what happened in the interaction of those different personalities of god before the creation of the world.
http://www.quora.com/What-was-God-doing-before-he-created-the-world