Haddon Robinson (ThM, Dallas Theological Seminary, MA, Southern Methodist University, PhD, University of Illinois) is the Harold John Ockenga Distinguished Professor of Preaching at Gordon-Conwell Theological Seminary, and he is widely regarded as an expert in the area of preaching.
Keith Willhite (Ph.D., Purdue University; Th.M., Dallas Theological Seminary) teaches preaching and serves as professor of Pastoral Ministries at Dallas Theological Seminary. Dr. Willhite is also a former pastor and the founder and president of the popular ministry-consulting firm, Strategenuity.