Keith L. Johnson (PhD, Princeton Theological Seminary) is associate professor of theology at Wheaton College. He is author of Theology as Discipleship and Karl Barth and the Analogia Entis, and he is the coeditor of Bonhoeffer, Christ and Culture.

Timothy Larsen (PhD, University of Stirling) is McManis Professor of Christian Thought at Wheaton College. He is a fellow of the Royal Historical Society and an honorary fellow in the School of Divinity at the University of Edinburgh, and he has been a visiting fellow at Trinity College, Cambridge, and All Souls College, Oxford. He is the author of several books, including George MacDonald in the Age of Miracles, John Stuart Mill: A Secular Life, The Slain God: Anthropologists and the Christian Faith, A People of One Book: The Bible and the Victorians, and Crisis of Doubt: Honest Faith in Nineteenth-Century England.

Marilynne Robinson is the author of the bestselling novels Lila, Home (winner of the Orange Prize), Gilead (winner of the Pulitzer Prize), and Housekeeping (winner of the PEN/Hemingway Award). She has also written four books of nonfiction, When I Was a Child I Read Books, Absence of Mind, Mother Country, and The Death of Adam. She teaches at the University of Iowa Writers' Workshop. Robinson has been given honorary degrees from Brown University, the University of the South, Holy Cross, Notre Dame, Amherst, Skidmore, and Oxford University. She was also elected a fellow of Mansfield College, Oxford University.

Timothy George is the founding dean of Beeson Divinity School of Samford University in Birmingham, Alabama, and serves as an executive editor at Christianity Today. He is a member of the Southern Baptist-Roman Catholic Conversation Team and has participated in the Evangelicals and Catholics Together initiative. He is the series editor for the Reformation Commentary on Scripture.