labingi

CN: I have read the book and have a long background in studying Christianity.

IMHO the dissonance you describe so clearly (include the dumb denizens of Heaven and Hell) is baked in. The version of the Bible interpretation and the version of the creation of the world as described in the show is an extremely fundamentalist and improbable one. That makes the background to the events involving the humans and the angels extremely out of kilter. There is actually no way to make sense of it.

I feel the show is deliberately being mysterious about the nature of God.

I don't there is any way to coherently describe the entire cosmology in an interiorly consistent way. A lot of cognitive dissonance is just... part of it all.