Douglas Groothuis is professor of philosophy at Denver Seminary. Groothuis was a campus pastor for twelve years prior to obtaining a position as an associate professor of philosophy of religion and ethics at Denver Seminary in 1993.

Tony Reinke is senior writer for Desiring God and author of Competing Spectacles (2019), 12 Ways Your Phone Is Changing You (2017), John Newton on the Christian Life (2015), and Lit! A Christian Guide to Reading Books (2011). He hosts the Ask Pastor John podcast and lives in the Phoenix area with his wife and three children.

David Wells is distinguished senior research professor at Gordon-Conwell Theological Seminary, and the author of numerous books.