Elmer John Thiessen taught philosophy at Medicine Hat College, Alberta for thirty-six years. Since his retirement he has taught courses at colleges in Lithuania, Ethiopia, Belgium, and Jamaica. He is author of six books, including Stumbling Heavenward: One Philosopher's Journey; The Scandal of Evangelism: A Biblical Study of the Ethics of Evangelism; and Teaching for Commitment: Liberal Education, Indoctrination & Christian Nurture.