Not to make light of mental illness, but:

HAYDEN, Idaho (AP) — A man who believed he bore the biblical "mark of the beast" used a circular saw to cut off one hand, then he cooked it in the microwave and called 911, authorities said.

***

The Book of Revelation in the New Testament contains a passage in which an angel is quoted as saying: "If anyone worships the beast and his image and receives his mark on the forehead or on the hand, he, too, will drink the wine of God’s fury."

The book of Matthew also contains the passage: "And if your right hand causes you to sin, cut it off and throw it away. It is better for you to lose one part of your body than for you whole body to do into hell."

Okay, so mistake number one: he forgot the wine.  Mistake number two: there’s nothing in the Bible about using the microwave.