Portal:Christianity/Selected biography/March 2008

Irenaeus was bishop of Lugdunum in Gaul, which is now Lyons, France. His writings were formative in the early development of Christian theology, and he is recognized as a saint by both the Eastern Orthodox Church and the Roman Catholic Church; both consider him a Father of the Church. He was a notable early Christian apologist. He was also a disciple of Polycarp, who was said to be a disciple of John the Evangelist. His feast day is 28 June.

His best-known book, Against Heresies (c 180) enumerated heresies and attacked them. Irenaeus wrote that the only way for Christians to retain unity was to humbly accept one doctrinal authority--episcopal councils. Irenaeus was the first to propose that all four gospels be accepted as canonical.

Born in the first half of the 2nd century (the exact date is disputed: between the years 115 and 125 according to some, or 130 and 142 according to others), Irenaeus is thought to have been a Greek from Polycarp's hometown of Smyrna in Asia Minor, now İzmir, Turkey. Unlike many of his contemporary Christians, he was raised in a Christian family rather than converting as an adult.

During the persecution of Marcus Aurelius, the Roman Emperor from 161-180, Irenaeus was a priest of the Church of Lyon. The clergy of that city, many of whom were suffering imprisonment for the faith, sent him (in 177 or 178) to Rome with a letter to Pope Eleuterus concerning the heresy Montanism, and that occasion bore emphatic testimony to his merits. Returning to Gaul, Irenaeus succeeded the martyr Saint Pothinus and became the second Bishop of Lyon.

During the religious peace which followed the persecution of Marcus Aurelius, the new bishop divided his activities between the duties of a pastor and of a missionary (as to which we have but brief data, late and not very certain). Almost all his writings were directed against Gnosticism, an off-shoot from Christianity which was spreading at the expense of what he considered to be Christian orthodoxy. The most famous of these writings is Adversus haereses (Against Heresies). In 190 or 191, he interceded with Pope St. Victor I to lift the sentence of excommunication laid by that pontiff upon the Christian communities of Asia Minor which persevered in the practice of the Quartodeciman celebration of Easter.

Nothing is known of the date of his death, which must have occurred at the end of the second or the beginning of the third century. In spite of some isolated and later testimony to that effect, it is not very probable that he ended his career with martyrdom. He was buried under the church of Saint John's in Lyons, which was later renamed St. Irenaeus in his honour; the tomb and his remains were destroyed utterly in 1562 by the Calvinist Huguenots. His feast is celebrated on 28 June in the Latin Church, and on 23 August in the Greek.

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