Heaven is not at all like you've been told it is. It's not a paradise. It's broken down,somehow. God might be in a far off city, or he/she/it might not be. No one knows for sure.
There are no clear answers, only more questions. No one really knows what's going on or they're lying about it.
You don't become an angel after death, not even a masturbating one! You end up in a strangely colored and shaped, genital-less alien-like body, where you can still excrete and have sex, but not like you did in life.
Memories of your former life are mostly gone, and retrieved either by drugs or by slowly returning on their own. You won't recall your name,and someone will give you a new one, mostly by using a descriptor.
Shadows follow you around, and sometimes attach to you. This is not good,but no one will really explain why. It'll get you sent underground, and to be digested by Heaven's stomach.
This is a deliciously frustrating book, that will cause you to question everything you've been told about the afterlife.