DR. CHARLIE DYER served for thirty-three years on the faculty and in the administration of three different institutions, including twenty years at Dallas Theological Seminary and ten years as Provost of the Moody Bible Institute. In 2010, Charlie became Professor-at-Large of Bible for Moody Bible Institute and host of The Land and the Book radio program, which is heard on more than 350 stations across the United States. For much of his time in ministry, Charlie has taken groups to Israel and the other lands of the Bible. In addition to his speaking, teaching, and guiding, Charlie has authored or coauthored numerous books, including The Rise of Babylon, What's Next?, The Christian Traveler's Guide to the Holy Land, 30 Days in the Land with Jesus, 30 Days in the Land of the Psalms, A Voice in the Wilderness, The ISIS Crisis, and Clash of Kingdoms. He also contributed to The Bible Knowledge Commentary, Nelson's Old Testament Survey, and The Moody Bible Commentary.

GREGORY A. HATTEBERG (Joliet College; Moody Bible Institute; Dallas Theological Seminary) is the director of Alumni for Dallas Theological Seminary and a seminar leader for Walk Thru the Bible Ministries. Prior to joining the staff at DTS, Mr. Hatteberg worked in Admissions at Moody Bible Institute. He completed graduate studies at the Institute of Holy Land Studies in Jerusalem, and has traveled extensively in Israel and beyond. Based on his experiences in Israel, he co-authored The Christian Traveler's Guide to the Holy Land with Dr. Charles Dyer. He and his wife, Lisa, are the parents of four children.