
The Iconoclasts tried in many ways to win the saint over to their side, but he remained faithful to Orthodoxy until the very end. Saint Cosmas did not obey the decree of Emperor Leo the Armenian (813-820) ordering the removal of the holy icons from the churches. For this he was expelled from his See and exiled to prison.
When the saint returned from exile, he and Saint Auxentius continued to defend the veneration of holy icons. At the mitigation of the persecution, Saint Cosmas was weak in body, but remained strong in spirit. Saint Cosmas and Saint Auxentius steadfastly preserved the Orthodox Faith until the end of their lives.