Keith L. Johnson (PhD, Princeton Theological Seminary) is associate professor of theology at Wheaton College. His research focuses on systematic theology, including the doctrines of the Trinity and Christology and the relationship between Protestant and Roman Catholic theology. He is author of Theology as Discipleship and Karl Barth and the Analogia Entis, and he is the coeditor of Bonhoeffer, Christ and Culture. An ordained Baptist minister, he and his wife, Julie, have one son.