Graham Tomlin (PhD, Exeter University) is principal of St. Mellitus College, London. He taught on Martin Luther and the Reformation in the theology faculty of the University of Oxford for eight years. He is the author, among many other publications, of The Power of the Cross: Theology and the Death of Christ in Paul, Luther and Pascal, The Provocative Church, Luther and His World and the Archbishop of Canterbury's Lent Book for 2014: Looking Through the Cross.