"Evil Harvest" by Rod Colvin. It's a disturbing read but it shows how religion can prey upon those who are weak and face hard times. It's set in the mid-west during the farm crisis when many people were losing their farms to the banks.
Google Mike Ryan and you can probably get most of the story. The way he brainwashed those people was beyond belief.
The man actually claimed to speak to YahWeh, then later on thought he was actually Yahweh's son. Disgusting.