The Regius Professor of Pastoral Theology at Oxford explains and justifies the doctrine of the Atonement, by analogy with the common experience of repentance, arguing that the self-identification of the believer with the personality of Christ, and the identity of the three Persons of the Trinity are both essential to actual atonement. With a historical sketch of the doctrine, from Clement of Rome in the first century, to Benjamin Jowett and James Maurice Wilson in the nineteenth.