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.

Mark Driscoll is a pastor at The Trinity Church in Scottsdale, Arizona.

J.D. Greear is the pastor of The Summit Church in Raleigh-Durham and the 62nd president of the Southern Baptist Convention. He is the author of several books, including his most recent title, Not God Enough: Why Your Small God Leads to Big Problems. He lives in Raleigh with his wife and their four children.

Eric Mason is the founder and pastor of Epiphany Fellowship in Philadelphia.

Ed Stetzer writes and speaks on theology, missiology, church planting, church revitalization, and church innovation.