Scott M. Gibson (DPhil, University of Oxford) is the David E. Garland Chair of Preaching and director of the PhD program in preaching at George W. Truett Theological Seminary, Baylor University, in Waco, Texas. He previously served as the Haddon W. Robinson Professor of Preaching and Ministry and director of the Center for Preaching at Gordon-Conwell Theological Seminary.

Matthew D. Kim (PhD, University of Edinburgh) is the George F. Bennett Professor of Preaching and Practical Theology, director of the Haddon W. Robinson Center for Preaching, and director of Mentored Ministry at Gordon-Conwell Theological Seminary in South Hamilton, Massachusetts.