If you have heard that there should be more books included in the New Testament canon, you really should read The Shepherd, which is the book that was passed over with the most difficulty by the council of Nicea when they established the modern canon. It is such a poorly written, silly little allegory that there can be no doubt that it doesn't belong. Instead, you can focus on whether John's Apocalypse does belong, and whether it has anything meaningful to say to a modern audience. ( )