Mark D. Allen (PhD, University of Notre Dame; DMin, Gordon-Conwell Theological Seminary) is professor of biblical and theological studies at Liberty University in Lynchburg, Virgina. He has been pastoring for nearly thirty years and currently serves as the pastor of Memorial Methodist Church in Appomattox, Virginia. He is the coauthor (with Joshua D. Chatraw) of two award-winning books, Apologetics at the Cross: An Introduction for Christian Witness and The Augustine Way: Retrieving a Vision for the Church's Apologetic Witness.