Todd Wilson (PhD, Cambridge University) serves as the senior pastor of Calvary Memorial Church in Oak Park, Illinois. Todd has spent over a decade in pastoral ministry, previously serving on staff at College Church in Wheaton, Illinois, and Bethlehem Baptist Church in Minneapolis, Minnesota. He is the cofounder and chairman of the Center for Pastor Theologians, a ministry dedicated to resourcing pastor theologians. Todd and his wife, Katie, have seven children. R. Kent Hughes (DMin, Trinity Evangelical Divinity School) is senior pastor emeritus of College Church in Wheaton, Illinois, and visiting professor of practical theology at Westminster Theological Seminary in Philadelphia, Pennsylvania. Hughes is also a founder of the Charles Simeon Trust, which conducts expository preaching conferences throughout North America and worldwide. He serves as the series editor for the Preaching the Word commentary series and is the author or coauthor of many books. He and his wife, Barbara, live in Wyncote, Pennsylvania, and have four children and an ever-increasing number of grandchildren.