Ministers, teachers and other students of the Bible around the world have profited from the insights and teachings of Evangelist John G. Hall. His writings are widely consulted resources on the subjects of Dispensations and Bible Prophecies encompassing God's external program for man. God's dispensational and prophetic plan is explained in Hall's writings with unique simplicity and clarity. Hall's books have been highly recommended by denominational leaders, college and seminary presidents, as well as professors in classrooms of higher learning. Because they are clearly written and well-organized, professors in several Bible colleges have used them as textbooks and/or additional source material for courses on Bible prophecy. His books are approved and made available in colleges and churches of various denominations, as well as in a number of other countries.