Garrison has a B.Th. from Los Angles Bible Theological Seminary, a B.A. from Westmont College, a M.Div. from Golden Gate Southern Baptist Seminary, and a Ph.D. from the University of Edinburgh, Scotland. He has taught Greek, Hebrew, and Christian subjects for many years. He spent four years in Western China as a missionary. He was held 1-1/2 years by the Communist Regime. He spent 22 years in Taiwan as a Church Planter and Seminary Teacher. He is now Professor of Greek at a Chinese Seminary in California.