Thabiti M. Anyabwile (MS, North Carolina State University) serves as a pastor at Anacostia River Church in Washington, DC, and is the author of numerous books. He serves as a council member of the Gospel Coalition, is a lead writer for 9Marks Ministries, and regularly blogs at The Front Porch and Pure Church. He and his wife, Kristie, have three children. Ligon Duncan (PhD, University of Edinburgh) is the chancellor & CEO and the 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. Ligon and his wife, Anne, have two children and live in Jackson, Mississippi. D. A. Carson (PhD, Cambridge University) is research professor of New Testament at Trinity Evangelical Divinity School, where he has taught since 1978. He is a cofounder of the Gospel Coalition and has written or edited nearly 120 books. He and his wife, Joy, have two children and live in the north suburbs of Chicago. Timothy J.

Keller is the founding pastor of Redeemer Presbyterian Church in New York. He is the best-selling author of The Prodigal God and The Reason for God.