The Five Books of S. Irenaeus, Bishop of Lyons, Against Heresies, written around 187 AD, is a critical work in early Christian theology. Irenaeus writes against the Gnostic heresies that were spreading in the early Church, defending orthodox Christianity by refuting the claims of Gnostic sects. This leather-bound edition presents the five books in their entirety, offering valuable insights into the early struggles of the Christian faith to define its doctrine and combat false teachings. Irenaeus' writings have had a profound influence on Christian theology, particularly in establishing the concept of apostolic succession and the authority of the Church. With scholarly annotations and a modern introduction, this edition offers readers an important historical and theological resource. Perfect for theologians, church historians, and those studying early Christianity, this beautifully bound edition is an essential addition to any library of Christian thought.