This book is an updated and expanded version of Alister McGrath’s definitive study of the history of the Christian doctrine of justification. The author brings together into a single volume the enormous amount of material from the two-volume first edition, while adding new sections dealing with recent developments in Pauline scholarship and ecumenical debates over the doctrine. This will be an essential resource for anyone wanting to understand historical theology, sixteenth-century church history or the modern ecumenical debates between Protestants and Roman Catholics.