Who Wrote the Book of Revelation?

I’ve been asked about who wrote the book of Revelation.  Here are some musings on it, the first part taken from my textbook on the New Testament.

Even though the book of Revelation was finally included in the New Testament canon because Christian leaders came to think it had been written by Jesus’ disciple, John the son of Zebedee, there were outspoken dissenters against its inclusion. Perhaps the most famous was Dionysius, a bishop of the city of Alexandria (Egypt) in the mid-third century,...