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.

James Montgomery Boice was pastor of Tenth Presbyterian Church in Philadelphia from 1968 until his death.

C.J. Mahaney is the senior pastor of Sovereign Grace Church of Louisville. He also writes at his personal website.

Tom Steller is serving through Training Leaders International as the Director of Theological Education in Cameroon. He continues to serve as an elder at Bethlehem Baptist Church.