Getz was a professor for 21 years, first at Moody Bible Institute and then at Dallas Theological Seminary. During his time at DTS, he wrote Sharpening the Focus of the Church, which led to him founding Fellowship Bible Church in 1972. Since then, he has written over 60 books, including The Measure of a Man and the Life Essentials Study Bible. His current focus is primarily evangelism via radio and print.