What reason does Les give for spending so much time teaching prophecy?
The reason given is 2 Peter 1:19, where Peter says we have a more sure word of prophecy. Prophecy is taught because it confirms and proves the truth more than even the Mount of Transfiguration experience, and it is grounded in Scripture rather than sensationalism.
Les explains that his reason for spending so much time in prophecy is not because prophecy is sensational or exciting, though it is, and he does not want to ride a hobby horse. Instead, he teaches prophecy on the basis of Scripture. He points to 2 Peter chapter 1, where Peter recalls the Mount of Transfiguration, the voice from heaven, and the honor and glory Christ received from God the Father. Yet Peter then writes in verse 19, “we have also a more sure word of prophecy.” Les says this is his reason: as thrilling as the Mount of Transfiguration experience was, prophecy is something that proves all these things even more.