John Piper is founder and teacher of desiringGod.org and chancellor of Bethlehem College & Seminary. For 33 years, he served as pastor of Bethlehem Baptist Church, Minneapolis, Minnesota. He is author of more than 50 books, including Desiring God: Meditations of a Christian Hedonist and most recently Come, Lord Jesus.

Tim Chester is the pastor of Grace Church Boroughbridge in England and a faculty member of Crosslands Training. His most recent book is Stott on the Christian Life: Between Two Worlds.

Douglas Wilson is pastor of Christ Church in Moscow, Idaho, and the writer of numerous books, including Same-Sex Mirage: Phantasmagoria at the Altar & Some Biblical Responses.