I would kindly, in a way I believe Jesus would've approved of, ask that you find how when and where and why the Book of Revelations was written and its intended audience. And who wrote Mark, Matthew, Luke and John, as well. And yes, I placed Mark before Matthew because Mark has the earliest stories about Jesus.

Hint: those Apostles didn't write any of them. And no one has been able to determine any of the authors with certainty.