Over the last 18 years, Harris has taught at various universities and theological schools, including Sacred Heart University, New York Theological Seminary, Fuller Theological Seminary, Portland Theological Seminary, Vanguard University, Virginia Christian College, and Regent University. While working at Regent University, he held an administrative position and was a tenured associate professor. He was named the 2019-2020 prestigious Moen Preaching Chair at North Central University. Harris currently teaches courses in the Department of Philosophy and Religious Studies at Old Dominion University.