Mark was a professor of New Testament at Ozark Christian College from 1990-2012, receiving a PhD from the University of Wales for his work on the politics of Jesus. In 2012 he has accepted the role of Teaching Pastor of Christ's Church of the Valley in Phoenix, AZ. Mark has authored a number of books, mostly on the Life of Christ (also Acts and Revelation). He is a speaker noted for his passion for the lost and his participation in completing the great commission of Christ. His life goal is to make Jesus famous.