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 Foundations for Lifelong Learning: Education in Serious Joy.

John MacArthur is the pastor-teacher of Grace Community Church, as well as an author, conference speaker, president of The Master’s University and Seminary, and featured teacher of Grace to You.

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.

Don Whitney is professor of biblical spirituality and associate dean at The Southern Baptist Theological Seminary in Louisville, KY. He is the author of several books, including Spiritual Disciplines for the Christian Life.

J. Christy Wilson (1921–1999) helped launch the Urbana missions conference, pioneered ministry in Afghanistan when others thought it impossible, mobilized hundreds of students toward world evangelization, and reintroduced the idea of leveraging one’s profession for the kingdom with the term “tentmaking.”