Mark E. Dever (born August 28, 1960) is the senior pastor of the Capitol Hill Baptist Church in Washington, D.C., and the president of 9Marks (formerly known as the Center for Church Reform), a Christian ministry he co-founded "in an effort to build biblically faithful churches in America." He is known as a Calvinist preacher. In the last several years, Dever has done conferences such as the Ligonier Ministries Conference, the Shepherd's Conference organized by John F. MacArthur.
Jennings Ligon Duncan III (born 1960) is an American Presbyterian scholar and pastor. Duncan was named senior pastor at First Presbyterian Church of Jackson, Mississippi (PCA) in 1996, and served in that capacity until early 2014. Effective January 1, 2014, Duncan resigned his position as Sr. Minister at First Presbyterian Church, Jackson, MS, and assumed the role of Chancellor of Reformed Theological Seminary. He continues to teach in the department of Systematic Theology.