Robby Gallaty is the senior pastor of Long Hollow Baptist Church in Hendersonville, Tennessee. He was radically saved from a life of drug addiction on November 12, 2002. In 2008, he began Replicate Ministries to equip and train men and women to be disciples who make disciples. He is also the author of several other books, including Preaching for the Rest of Us (2018), Here and Now (2019), Recovered (2019), and Replicate (2020).

David Platt serves as Lead Pastor of McLean Bible Church in Washington D.C. He is the founder and chairman of Radical, an international ministry that serves the church for the cause of Christ—to glorify God by making disciples and multiplying churches among all nations.

He holds a Ph.D. from New Orleans Baptist Theological Seminary and is the author of Radical, Radical Together, Follow Me, Counter Culture, and Something Needs to Change.

Daniel L. Akin is the president of Southeastern Baptist Theological Seminary in Wake Forest, North Carolina. He holds a Ph.D. in Humanities from the University of Texas at Arlington and has authored or edited many books and Bible commentaries including Ten Who Changed the World and the Christ-Centered Exposition Commentary volumes on Mark and 1, 2, 3 John.

Tony Merida is lead pastor of Imago Dei Church in Raleigh, North Carolina. He earned a Ph.D. in preaching from New Orleans Baptist Theological Seminary and serves as associate professor of Preaching at Southeastern Baptist Theological Seminary. His books include Faithful Preaching and Orphanology.