Dr. Thomas is Senior Minister at First Presbyterian Church in Columbia, SC. He joined the staff in 2011, coming from Jackson, MS, where he was Chairman of the Theology Department at Reformed Theological Seminary and Minister of Teaching at First Presbyterian Church. He is from Wales. He is a graduate of the University of Wales (Bc.S), Reformed Theological Seminary (M.Div), and University of Wales/Lampeter (Ph.D.). He was ordained in the Evangelical Church of Ireland, where he served Stranmillis Evangelical Presbyterian Church in Belfast for 17 years before going to Mississippi. He is the Professor of Systematic and Historical Theology at RTS Atlanta and a well published author.
He is married to Rosemary. They have two grown children, one granddaughter, and one grandson
- God's Ambassadors: The Westminster Assembly as Candidates and Credentials Committee
- The Real John Knox
- Praying for Heretics: Irenaeus of Lyons' First Prayer for the Gnostics
- God's Ambassadors: The Westminster Assembly and the Reform of the English Pulpit, 1643-1653
- Ressourcement: Irenaeus of Lyons and His Answer to the Hyper-Spirituality of Gnosticism