Charles Colson was the founder of Prison Fellowship Ministries, an outreach to convicts, victims of crime, and justice officers. Colson, who converted to Christianity before he was indicted on Watergate-related charges, became one of evangelicalism's most influential voices. His books included Born Again and How Now Shall We Live? A Christianity Today columnist since 1985, Colson died in 2012.
Timothy George is the dean of Beeson Divinity School at Samford University and a member of Christianity Today's Editorial Council. His books include Reading Scripture with the Reformers and Is the Father of Jesus the God of Muhammad? Like Colson, George has been heavily involved in the Evangelicals and Catholics Together discussions. George began cowriting "Contra Mundum" with Colson in 2011.