Robert Wolgemuth graduated from Taylor University (Biblical Literature) and received an honorary doctorate (LhD) from the same university in 2005. He is the author or coauthor of over twenty books, including Men of the Bible, The Most Important Year in a Man's/Woman's Life, and the notes to the Dad's Bible. He and Bobbie live in central Florida. See website: http://robertwolgemuth.com
Mark DeVries is pastor of youth and families at First Presbyterian Church in Nashville, Tennessee, where he has served for the past seventeen years. In addition to authoring several books, including Family-Based Youth Ministry and True Love Waits, he is founder of Youth Ministry Architects (www.ymarchitects.com), a strategic-planning service for churches facing transitions in their youth ministries. He and his wife, Susan, live in Nashville.