Dr. Ian Hamilton is Professor of Church History at Westminster Presbyterian Theological Seminary, England. He is a trustee of Banner of Truth Trust and a board member of Greenville Presbyterian Theological Seminary (GPTS) and London Theological Seminary. He is an Adjunct Professor at GPTS and the author of The Erosion of Calvinist Orthodoxy: Drifting from the Truth in Confessional Scottish Churches, The Letters of John, John Calvin’s Doctrine of Holy Scripture, and The Faith-Shaped Life. He is a Scot, married to Joan, and they have four children and six grandchildren.

Dr. Guy Richard is President and Associate Professor of Systematic Theology at RTS in Atlanta, where he has served since 2017. Before moving into his current position, Guy served as the Senior Minister of the First Presbyterian Church in Gulfport, Mississippi (PCA), for almost 12 years. He had the privilege of leading this congregation in the aftermath of Hurricane Katrina, which completely destroyed the church facility and the homes of approximately one-third of the members of the congregation. Guy is the author of four books and many articles dealing with the history and theology of the Reformation and post-Reformation periods. He posts regularly on his blog The Suburbs of Heaven, which is available on his website. In his free time, he enjoys swimming, cycling, and most other sports. He and his wife Jennifer have three children. 

Rev. Iver Martin is a minister in the Free Church of Scotland and principal of Edinburgh Theological Seminary in Scotland, where he also teaches Scottish church history. He spent 20 years as pastor of two congregations: one in Aberdeen and the other in Stornoway on the Isle of Lewis. Despite his southern accent, Iver is culturally highland and is a fluent Gaelic speaker. He has been married to Mairi for 40 years. They have 6 children and 8 grandchildren, two of whom are Peruvian.   

Rev. Nick Batzig is senior pastor of Church Creek PCA in Charleston, South Carolina, and an associate editor for Ligonier Ministries. He regularly writes for Tabletalk Magazine, "He Reads Truth," Modern Reformation, Church Leaders, and Christianity.com. Nick is published in Jonathan Edwards and Scotland (Dunedin, 2011) and Jonathan Edwards for the Church (EP Publishing, 2015), and has taught on pastoral leadership at Reformed Theological Seminary in Atlanta, Georgia. He and his wife, Anna, have three sons, Micah, Eli, and Judah.

Dr. Brian Cosby serves as senior minister of Wayside Presbyterian Church on Signal Mountain, Tennessee. He is an adjunct professor of historical theology at Reformed Theological Seminary, Atlanta, and at Covenant College on Lookout Mountain, Georgia. He holds degrees from Samford University (B.A.), Beeson Divinity School (M.Div.), and the Australian College of Theology (Ph.D.). Brian is an officer (Capt.) in the United States Air Force Reserves, author of over a dozen books, content writer for Ligonier Ministries, and serves as editorial director for the Gospel Reformation Network. Brian enjoys reading, backpacking, and fishing. He and his wife, Ashley, have three children and live on a small farm.