Defense of the Holy Icons
The reign of Leo the Armenian marked the revival of the iconoclast policy that the Seventh Ecumenical Council (787) had condemned. Sources place Emilian's tenure at Cyzicus in the years surrounding this revival. When the emperor sought to bind the bishops to the imperial program against the icons, Emilian distinguished himself by openly resisting the principle that doctrine could be dictated from the court, holding instead that such matters belonged within the Church.
Accounts of his end vary in detail. The Prologue of Ohrid and the Orthodox Church in America's synaxarion describe five years of exile ending in his death around 820, while a Serbian calendar account states that he was imprisoned in 815 for the Orthodox faith and died there as a confessor. In every account he is remembered as one who endured deprivation and suffering rather than compromise, and the liturgical texts honor him as a champion of the faith and a boast of Cyzicus.