Some dude named John who took a lot of magic mushrooms or something said that Jesus was going to come back and butcher everybody. Jesus did not say that. The book of Revelation is most likely about Nero and the destruction of Rome. There's some interesting biblical scholarship about it and I think that part is more interesting than the actual book

That's not to say Jesus didn't say some metal things

Matthew 10:34-36 NRSVUE [34] “Do not think that I have come to bring peace to the earth; I have not come to bring peace but a sword. [35] For I have come to set a man against his father, and a daughter against her mother, and a daughter-in-law against her mother-in-law, [36] and one’s foes will be members of one’s own household.

Matthew 12:34 NRSVUE You brood of vipers! How can you speak good things when you are evil? For out of the abundance of the heart the mouth speaks.