What I found fascinating about this video is how the guy originally got involved in Satanism. As a kid, he was obsessed with everything to do with the sci fi/fantasy genre, played Dungeons and Dragons every weekend and then started trying to find out if magic was real.
The sad part of the story is that he thinks he left Satanism by becoming a 'Christian' but the fact is, Satan just kept hold of him by allowing him to think he was 'saved' by luring him into the Catholic church.
Another thing I found interesting is the fact that he grew up in a Baptist 'church' and then, as a Satanist, he would go into these churches to sow discord and cause the church to split. He did this many times, which just shows how lacking in discernment the people in these 'churches' really are.
https://www.youtube.com/watch?v=Q0FJKdtOAm0