At the monastery both monks engaged in spiritual struggles and were soon glorified by gifts from the Lord. Once, during a harvest, when the people were weakened by thirst, an empty metal vessel was filled with water by the prayer of the monks.
Patriarch Tarasius consecrated Saint Michael as bishop of the city of Synnada. Through his holy life and wisdom, Saint Michael won the love of believers, and the notice of the emperors Nicephorus I (802-811) and Michael I Rangabe (811-813). Saint Michael was present at the Seventh Ecumenical Council at Nicea in 787.
When the Iconoclast heretic Leo the Armenian (813-820) assumed the throne, he began to expel Orthodox hierarchs from their Sees, appointing heretics in their place.
Saint Michael defended Orthodoxy, bravely opposing the heretics and denouncing their error. Leo the Armenian brought Saint Michael to trial, but not fearing torture he answered resolutely, “I venerate the holy icons of my Savior Jesus Christ and the All-Pure Virgin, His Mother, and all the saints, and it is to them I bow down. I shall not obey your decrees to remove icons from churches.”
Leo then banished Saint Michael to the city of Eudokiada, where the confessor died about the year 821. The head of Saint Michael is preserved in the Great Lavra of Saint Athanasius on Mount Athos, and part of the relics are at the Iveron monastery.
Troparion — Tone 4
From your youth you dedicated your life to God, / and you were proclaimed shepherd and hierarch of Christ, holy Michael. / You endured afflictions and exile / because cause you honored the icon of Christ; / now you pour forth healings for us all.
Kontakion — Tone 8
As a most honorable hierarch and champion of true piety, / undaunted by fear of the notorious tyrant, / you conquered his heretical opposition, freely proclaiming in a loud voice: / “I venerate the icon of Christ and of His all-pure Mother!” / Therefore, we honor you, O Michael!