There are no angels, no heaven, and no god
Well, the Divinity Statue desacription in 3 is what says it's the "omniscient God of time and space," but I feel their get-out there is the name for the statues in 1, the watcher of time. Presumably it set the universe in motion and then just leaves it to do its thing. I mean those statues work, so there must be something on the other end.
God sure does like being offered demon blood, mind you.