*An engraving allegedly of Irenaeus, in Gaul (now Lyons, France)*

Who was the most dangerous early heretic? Simon Magus, Marcion, Valentinus, Justin Martyr, or Irenaeus of Lyon? Why should modern Christians care? Though considered a major saint by the Church of Rome, the Eastern Orthodox, and most Protestants, Irenaeus was hot and cold on doctrine. Could Irenaeus have been the most dangerous of early heretics? Was Irenaeus a binitarian or trinitarian? Was he a millennialist? Did Irenaeus quote apocryphal books as scripture? Did he rely on them and traditions of men to push non-biblical doctrines? Did he claim to know Polycarp of Smyrna and endorse him, but not hold to his and the Apostle John's practices regarding the biblical Passover? What about the 'Lord's Day'? Did Pope Benedict XVI refer to Irenaeus as the "true founder of Catholic theology'? Do Protestants consider him the most important second century source of "orthodoxy'? Was Irenaeus wrong about the founding and succession from the Apostles Peter and Paul related to Rome according to Roman Catholic scholars? What about heaven? Who really had (and still has) true apostolic succession? Should the Book of Revelation be allegorized? Did Irenaeus confuse the Beast and the Antichrist? What about 666? What are some of the reasons Christians would want to know about Irenaeus and his teachings today? Dr. Thiel addresses these issues and more.

A detailed and referenced article of related interest is available titled 'Irenaeus: The Most Dangerous Heretic?'

Sermon Youtube video link: Irenaeus: The Most Dangerous Early Heretic?

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