Bishop D.R. Vestal, Ph.D. CBI Chancellor and President Bishop D.R. Vestal pastors Apostolic Temple in Garden Valley, Texas. He served four years in the Air Force under the Strategic Air Command, and served two years in Fairford, England. He has spent 48 years as a Bible teacher and has lectured on Bible prophecy and doctrine. He earned his Master of Theology degree from Indiana Bible College, Seymour, Indiana in 1988.Bishop Vestal holds a Doctor of Philosophy in Religion degree and previously served as pastor in Cypress, California. Rev. Vestal is an established author and has published books on the Oneness doctrine and prophecy studies internationally. Books by Dr. D.R. Vestal