John Piper is founder and teacher of Desiring God and chancellor of Bethlehem College and 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 Foundations for Lifelong Learning: Education in Serious Joy.

Thabiti Anyabwile is pastor of Anacostia River Church in Southeast Washington, D.C.

William Mackenzie is managing director and co-founder of Christian Focus Publications.

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.