I haven't read through the whole thread to understand how you know this. Just attending a church does not necessarily make someone a "devout Christian."
The former "devout" pastor at my father's church is engaging in this scam: Insinuate yourself into the lives of the elderly by providing very welcome assistance getting groceries, driving, doing errands, etc. Then get the elderly person to legally adopt you. Of course you get the person to leave her "devoted son" the estate. This was discovered when he and his wife appeared as surviving son and daughter in a number of obituaries, including that of my grandmother's best friend. He unsuccessfully tried this with my widowed aunt. He's now involuntarily retired (for other reasons), but still scamming away.
Yeah, and BTK was the president of HIS church, too....