Greg Scharf is Professor of Homiletics at Trinity Evangelical Divinity School, Deerfield, Illinois. He previously served in pastoral roles at All Souls, Church, Langham Place, London; Knox Church, Toronto; and Salem Evangelical Free Church in Fargo, North Dakota. He is author of Let the Earth Hear His Voice: Strategies for Overcoming Bottlenecks in Preaching God's Word. Dr. Scharf has facilitated preaching seminars in many countries under the auspices of Langham Preaching. He and his wife Ruth have three married sons and five grandchildren.