Sam Storms (PhD, University of Texas at Dallas) has spent more than four decades in ministry as a pastor, professor, and the author of more than two-dozen books. He was visiting associate professor of theology at Wheaton College from 2000 to 2004, and is currently senior pastor at Bridgeway Church in Oklahoma City, Oklahoma. He is the founder of Enjoying God Ministries and the author of numerous books, including Chosen for Life, Tough Topics: Biblical Answers to 25 Challenging Questions, Kept for Jesus, and Packer on the Christian Life.
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.