Open a window onto the Gnostic controversy facing the church in the second century with one of the only surviving sources on the subject. This, the most important work of St. Irenaeus, examines and refutes the Gnostic teachings, providing a valuable description of Gnosticism as well as an … more
Saint Irenaeus, (2nd century AD – c. 202) was Bishop of Lugdunum in Gaul, then a part of the Roman Empire. He was an early church father and apologist, and his writings were formative in the early development of Christian theology. He was a hearer of Polycarp, who in turn was a disciple of John the Evangelist. Irenaeus’ best-known book, Adversus Haereses or Against Heresies (c.