DR. JOHN D. HANNAH is the Distinguished Professor of Historical theology and Research Professor of Theological Studies at Dallas Theological Seminary in Dallas, Texas. He holds a B.S. degree from Philadelphia College of Bible, an M.A. degree from Southern Methodist University, Th.M. and Th.D. degrees from Dallas Theological Seminary, a Ph.D. from the University of Texas at Dallas and received a Post-doctoral fellowship in American Studies at Yale University, New Haven, CT. Dr. Hannah has written extensively for journals including Bibliotheca Sacra, Front Lines, Fundamentalist Journal, Discipleship Journal, Modern Reformation, and Trinity Journal. His books include The Glory of God Alone (Presbyterian and Reformed Publishing Co.) and The Pictorial Guide to Church History, The Kregel Guide to Ancient Church History, The Kregel Guide to Medieval Church History, and The Kregel Guide to Reformation Church History (Kregel Publications). He has also published three volumes of charts (Diagrams and Charts of Ancient-Medieval history, Reformation and Post Reformation History, and Modern and Post Modern Church History) with Zondervan. Dr. Hannah is a frequent conference and church speaker both in the United States and abroad.