 You know, I don't believe in God. I've grappled with the question, and I don't believe in God. He's saying, I haven't even cracked the spine of a book to begin investigating this. Keep going. If God is omniscient, then it knows how we're going to act in advance. Everything that we do has to align with God's foreknowledge, meaning that our free will is actually just an illusion. Either God is all-knowing, or we have free will. Both cannot simultaneously be true.