Christian terror? In a grisly murder an Oklahoma college student with strong Christian beliefs nearly decapitates a young man because the victim practiced witchcraft.

Isaiah Zoar Marin, 21, is charged with first-degree murder for the killing of Jacob Andrew Crockett, 19. Marin is accused of using a “long knife or sword” to kill Crockett.

According to a court affidavit, the suspect, Marin, is described as a “religious zealot” and “heavy drug user.”

The victim, Crockett, is the son of an Oklahoma state trooper.

Police report the victim had what appeared to be multiple deep slash and stab wounds and the “head was mostly severed from his body.”

Marin was watching videos on YouTube “related to his Christian beliefs and the Book of Matthew” before the murder, according to the affidavit.

The document also notes that Marin had feuded with Crockett in the past because the victim was practicing witchcraft.

The defendant’s brother, Samuel Marin, said “in the past Jacob and Isaiah had disagreements” because Jacob had been” practicing witchcraft and Isaiah had strong Christian beliefs,” a Stillwater police officer reported.

Police say the two men were “acquaintances” and Crockett was attending class at Northern Oklahoma College, but was planning to transfer to OSU.

Marin’s Facebook page features many posts professing his love for God, with the latest public post being on Aug. 8 of this year. The post reads:

Tried to take on a demon and God had to help me through the tough parts. Got to be careful with my words and pay closer attention to my emotions. Need to figure out how to keep on speaking when I’m with the presence of the Lord God.

According to the affidavit, Marin told police, “I murdered someone” and was “rambling about sacrificing and magic.”

During a news conference Stillwater police Capt. Randy Dickerson emphasized that the case is not related to recent cases of beheadings by Islamic extremists.

Instead of Islamic extremism, the case appears to be about Christian extremism fueled by methamphetamine.

Marin remains in custody without bond and has a court appearance set for 9 a.m. Dec. 1.

A Facebook page, RIP Jacob Crockett, was created early Thursday and includes several photos of the victim with his heavy metal band as well as posts from friends and supporters.

*** Update – Isaiah Zoar Marin was sentenced to life in prison without the possibility of parole ****