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He was famous for authoring many hagiographical writings and sermons.
He was a contemporary of the Roman Emperor Anastasius I, who favoured the non-Chalcedonian churches, and of Severus of Antioch, the champion of Miaphysitism in Syria. The latter wrote a message to John regarding the nature of Christ, which reads:
|“||Jesus Christ, after the union with flesh, has become of one Nature with one Will without separation, and I believe in the same faith of Pope Cyril and Pope Dioscorus.||”|
John replied with a message that testified to the union of the essence of God, and the trinity of His characters. He also proclaimed that by the incarnation of the eternal Son of God, the Divine and the human nature have become one and no longer two natures, without separation, mingling, or confusion. He anathematized those who separate the two natures, those who confuse them and those who said that the suffering crucified Christ was only a man, and those who say that His Divine nature also suffered and died. He said that the Orthodox faith was to profess that God the word suffered by the flesh that united with.
John I (II)
| Succeeded by|
|Patriarch of Alexandria|