Distinguished Professor Emeritus, Columbia Biblical Seminary, now Columbia International University
Teacher of Bible courses, Columbia Biblical Seminary (1972-2010)
Provost and Vice President for Academic Affairs, Columbia Biblical Seminary (1988-1994)
President, Columbia Biblical Seminary (1990-1991)
Academic Dean, Columbia Biblical Seminary (1972-1988)
Faculty, Northwestern College (1951-1957)
Helped found and establish the Urban Theological College of Central Africa
Otros aspectos destacados de la carrera
Missionary to Africa where he conducted church planting, worked in leadership training, and taught at the rural Chizera Bible Institute in Zambia (1957-1969)
Chairman of the Evangelical Fellowship in Zambia and served three terms as the Chairman of the Association of Evangelical Bible Colleges of Africa and Madagascar
Conductor of church growth workshops in Burundi, Central Africa Republic, the Ivory Coast, Mali, Sierra Leone, and South Africa
Lecturer for countless institutions and parachurch organizations for more than three decades
Key trainer for Campus Crusade and the Association of Christian Schools International
Publicaciones
Contributor to numerous journals
World Missions Today and Discipling Leaders with a Vision for the World
Several interactive Bible CDs, including “Walking in Their Sandals,” “Exploring Jesus’ World,” and “Israel in the Times of Gentiles”