- The Unseen Realm
- Reversing Hermon: Enoch, the Watchers, and the Forgotten Mission of Jesus Christ
- Supernatural: What the Bible Teaches about the Unseen World - And Why It Matters
- Demons: What the Bible Really Says about the Powers of Darkness
- A Companion to the Book of Enoch: A Reader's Commentary, Vol I: The Book of the Watchers (1 Enoch 1-36)