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.

Carl Ellis is a theological anthropologist and assistant professor of practical theology at Redeemer Seminary in Dallas, Texas. He is the author of several books on African-American culture and theology.

Oscar Huerta is an elder at Redeemer Bible Church in Minnetonka, Minnesota.