Anthropology

likely written 100 years after the time of Christ.

written not by the apostle John, but by John of Patmos.

John of patmos was a hermit who lived in a cave on the island of Patmos, mostly likely living by the charity of locals who would venture to his cave to hear him tell tails and make up stories.

the book was included as a standard canon of the bible by Pope Damasus in 382 at the Council of Rome, most likely because it included horrific tales of the ending of the world. The eastern church rejected it as part of the bible.