Kevin DeYoung (MDiv, Gordon-Conwell Theological Seminary) is senior pastor at University Reformed Church in East Lansing, Michigan, and chancellor's professor of systematic and historical theology at Reformed Theological Seminary. He blogs at the Gospel Coalition and has authored or coauthored numerous well-known books such as Just Do Something, The Hole in Our Holiness, Taking God At His Word, What Does the Bible Really Teach about Homosexuality?, and The Biggest Story, as well as the award-winning books Why We’re Not Emergent, Why We Love the Church (with Ted Kluck), and Crazy Busy.
D. A. Carson (PhD, Cambridge University) is research professor of New Testament at Trinity Evangelical Divinity School, where he has taught since 1978. He is president of the Gospel Coalition, and has written or edited nearly 60 books including Scandalous, Memoirs of an Ordinary Pastor, and The Difficult Doctrine of the Love of God. He and his wife, Joy, have two children and live in the north suburbs of Chicago.
TIMOTHY KELLER is founder and pastor of Redeemer Presbyterian Church in New York. He is the best-selling author of The Prodigal God and The Reason for God.