" The heavenly revelation he receives concerns God’s activity in history to achieve his eschatological purpose for the world. In other words, John’s concerns are exclusively prophetic. He uses the apocalyptic genre as a vehicle of prophecy, as not all Jewish apocalyptists did consistently. So it would be best to call John’s work a prophetic apocalypse or apocalyptic prophecy. With that qualification, it obviously fits the definition of the genre apocalypse quoted above, and there should be no difficulty in recognizing its generic relationship to the Jewish apocalypses, while at the same time acknowledging its continuity with Old Testament prophecy. "

― Richard Bauckham , Theology of the Book of Revelation