John Piper is founder and lead teacher of [...] and chancellor of Bethlehem College & Seminary. He served for thirty-three years as the pastor of Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don't Waste Your Life; and Reading the Bible Supernaturally.

Justin Taylor (PhD, The Southern Baptist Theological Seminary) is the executive vice president of book publishing and book publisher at Crossway. He has edited and contributed to several books, including A God-Entranced Vision of All Things and Reclaiming the Center, and he blogs at Between Two Worlds--hosted by the Gospel Coalition.

Justin Taylor (PhD, The Southern Baptist Theological Seminary) is the executive vice president of book publishing and book publisher at Crossway. He has edited and contributed to several books, including A God-Entranced Vision of All Things and Reclaiming the Center, and he blogs at Between Two Worlds--hosted by the Gospel Coalition.

John Piper is founder and lead teacher of [...] and chancellor of Bethlehem College & Seminary. He served for thirty-three years as the pastor of Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don't Waste Your Life; and Reading the Bible Supernaturally.

Mark Talbot (PhD, University of Pennsylvania) is associate professor of philosophy at Wheaton College. His areas of expertise include philosophical psychology, philosophical theology, David Hume, Augustine, and Jonathan Edwards. He and his wife, Cindy, have one daughter and three grandchildren.

David Powlison (1949-2019) was a teacher, a counselor, and the executive director of the Christian Counseling & Educational Foundation. He received his PhD from the University of Pennsylvania and was also the senior editor of the Journal of Biblical Counseling. He wrote a number of books, including How Does Sanctification Work?; Making All Things New; and God's Grace in Your Suffering.

Joni Eareckson Tada is founder and CEO of the Joni and Friends International Disability Center, which ministers to thousands of disabled people and their families through programs of practical encouragement and spiritual help. She is also an artist and the author of numerous best-selling books such as Joni; Heaven: Your Real Home; and When God Weeps.