Saint Irenaeus (Greek: Εἰρηναῖος), (2nd century AD - c. 202) was a Christian Bishop of Lugdunum in Gaul, then a part of the Roman Empire (now Lyons, France). He was an early church father and apologist, and his writings were formative in the early development of Christian theology. He was a disciple of Polycarp, who was said to be a disciple of John the Evangelist.
Irenaeus' best-known book, Adversus Haereses or Against Heresies (c. 180) is a det...
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Saint Irenaeus (Greek: Εἰρηναῖος), (2nd century AD - c. 202) was a Christian Bishop of Lugdunum in Gaul, then a part of the Roman Empire (now Lyons, France). He was an early church father and apologist, and his writings were formative in the early development of Christian theology. He was a disciple of Polycarp, who was said to be a disciple of John the Evangelist.
Irenaeus' best-known book, Adversus Haereses or Against Heresies (c. 180) is a detailed attack on Gnosticism, which was then a serious threat to the Church, and especially on the system of the Gnostic Valentinus. As one of the first great Christian theologians, he emphasized the traditional elements in the Church, especially the episcopate, Scripture, and tradition. Irenaeus wrote that the only way for Christians to retain unity was to humbly accept one doctrinal authority—episcopal councils. Against the Gnostics, who said that they possessed a secret oral tradition from Jesus himself, Irenaeus maintained that the bishops...
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