Trentham teaches primarily in the areas of Christian discipleship and formation, and emphasizes the centrality of redemptive community and Christian practices in all of his classes. His pastoral experience includes leadership in young adult ministry, corporate worship, and missional strategy. He is the author and contributor to numerous books, journal articles, and research studies in the areas of educational philosophy, theology and human development, Christian higher education, and ministry leadership. In 2017, Trentham was elected as President of the Society of Professors in Christian Education (SPCE), the primary scholarly guild for evangelical academicians in the field of educational ministry. He and his wife Brittany, both originally from East Tennessee, are the blessed parents of three vibrant children.