sentences:  Guy earned a PhD in Christian theology from the University of Chicago, where his dissertation was supervised by Langdon Gilkey, in 1971.During his Chicago study leave, La Sierra became a campus of Loma Linda University; he served as associate dean (1972–74) and dean (1974–77) of Loma Linda's College of Arts and Sciences.He left California in 1977 to take up an appointment as Professor of Theology at Andrews University.