Derek Thomas (PhD, University of Wales, Lampeter) is Chancellor’s Professor of Systematic and Pastoral Theology at Reformed Theological Seminary and senior minister at First Presbyterian Church (ARP) in Columbia, South Carolina. He is the author of many books, including Let Us Worship God, and serves as a teaching fellow with Ligonier Ministries. Derek and his wife Rosemary have two children and two grandchildren. Dr. Thomas is returning to Reformation Boise this year after being a featured speaker in 2022.

Ian Hamilton has been minister of Cambridge Presbyterian Church since 1999. He graduated from Edinburgh University in 1979 and became the minister of Loudoun Church of Scotland, Newmilns in the same year, serving there for almost twenty years. His books include The Faith-Shaped Life and, The Gospel-Shaped Life. Ian is married to Joan and they have four children.