C. Ben Mitchell holds the Graves Chair of Moral Philosophy at Union University in Tennessee, where he previously served as provost and vice president of academic affairs. He is the author of Ethics and Moral Reasoning: A Students' Guide.

D. A. Carson is the series editor of Questions for Restless Minds. He is professor emeritus of New Testament at Trinity Evangelical Divinity School, cofounder of The Gospel Coalition, and author of numerous books, including The God Who Is There: Finding Your Place in God's Story.