Thabiti M. Anyabwile (MS, North Carolina State University) is a pastor at Anacostia River Church in Washington, D. C. and the author of numerous books, including What is a Healthy Church Member?, The Faithful Preacher, and Finding Faithful Elders and Deacons. He serves as a council member with the Gospel Coalition, is a lead writer for 9Marks Ministries, and regularly blogs at Pure Church, hosted by the Gospel Coalition. He and his wife, Kristie, have been married for over twenty years and have three children.
John Piper (DTheol, University of Munich) is the founder and teacher of desiringGod.org and the chancellor of Bethlehem College & Seminary. He served for 33 years as the senior pastor of Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than 50 books, including Desiring God, Don’t Waste Your Life, This Momentary Marriage, Bloodlines, and Does God Desire All to Be Saved?