The August 2025 installment of the monthly RTS Jackson Online Discussion Forum features Dr. Guy Waters, Dr. David Irving and Dr. Ligon Duncan discussing Dr. Waters’ latest book, “One, Holy, Catholic, and Apostolic Church.”

Dr. David T. Irving

Dr. David T. Irving serves as President and Assistant Professor of Church History and Pastoral Theology at Reformed Theological Seminary in Jackson, Mississippi. He was appointed to the role in June 2025, following faithful service as Pastor of Woodland Presbyterian Church (PCA) in Hattiesburg, Mississippi.

Dr. Guy P. Waters

Dr. Guy Waters (Ph.D., Duke University) is the James M. Baird, Jr. Professor of New Testament and Academic Dean at RTS Jackson. In 2003, he became a teaching elder in the Mississippi Valley Presbytery (PCA). He served as the Chair of the Credentials Committee for more than ten years.

Dr. J. Ligon Duncan III

Ligon Duncan (MDiv, Covenant Theological Seminary; PhD, University of Edinburgh) is the Chancellor & CEO of Reformed Theological Seminary, the John E. Richards Professor of Systematic and Historical Theology, and the President of RTS Jackson. He has authored, co-authored, edited, or contributed to numerous books. You can follow him on Twitter.