Mark Dever (PhD, Cambridge University) is the senior pastor of Capitol Hill Baptist Church in Washington, DC, and president of 9Marks (9Marks.org). Dever has authored over a dozen books and speaks at conferences nationwide. He lives in Washington, DC, with his wife, Connie, and they have two adult children.

Ligon Duncan (PhD, University of Edinburgh) is  chancellor, CEO, and John E. Richards Professor of Systematic and Historical Theology at Reformed Theological Seminary. He previously served as the senior minister of the historic First Presbyterian Church in Jackson, Mississippi, for seventeen years. He is a cofounder of Together for the Gospel, a senior fellow of the Council on Biblical Manhood and Womanhood, and was the president of the Alliance of Confessing Evangelicals from 2004–2012. Duncan has edited, written, or contributed to numerous books. He and his wife, Anne, have two children and live in Jackson, Mississippi.

C. J. Mahaney is the senior pastor of Sovereign Grace Church of Louisville. He has written, edited and contributed to numerous books, including Proclaiming a Cross-Centered Theology; Don't Waste Your Sports; and Sex, Romance, and the Glory of God. C. J. and his wife, Carolyn, are the parents of three married daughters and one son, and the happy grandparents to twelve grandchildren.