Michael Horton (PhD, University of Coventry and Wycliffe Hall, Oxford) is the J. Gresham Machen Professor of Systematic Theology and Apologetics at Westminster Seminary California. He is the president of White Horse Media, for which he co-hosts the White Horse Inn, a nationally syndicated, weekly radio talk show exploring issues of Reformation theology in American Christianity. The editor in chief of Modern Reformation magazine, Horton is the author of more than twenty publications.
Dane Ortlund (PhD, Wheaton College) is executive vice president and Bible publisher at Crossway in Wheaton, Illinois, where he lives with his wife and their five children. He is the author of several books and co-editor of Short Studies in Biblical Theology and Knowing the Bible and has written numerous articles in both scholarly and popular venues.