Arnold, Clinton E.: - Clinton E. Arnold is dean of Talbot School of Theology in La Mirada, California. Prior to becoming dean, he was a professor in the New Testament department for twenty-five years. He is the author of many books, including 3 Crucial Questions about Spiritual Warfare, and is the editor of the Zondervan Illustrated Bible Backgrounds Commentary.

Arnold, Jeff: - Jeff Arnold is a high school English and logic teacher in Santa Ana, California. A former youth pastor, he is the creator of Unleashed, an intensive training camp for Christian high schoolers that equips them to share their faith. He also trains new believers in the basics of theology as part of a team at his local church.