Blank book?

This story is unplanned and I have no idea we’re it might go but I hope it can help others. A story of a man that live in a world of degenerate god and ignorant and fickle human. He get the guidance and advice of many from a book that has always been but never created. Why does he have it. Why does he know about thing. Why does he live with power. This is what we want to know