He was born in Arabia to wealthy Christian parents. He and his brother Theodore (December 27) became monks in the monastery of St Sabbas the Sanctified. During the iconoclast persecutions, they were sent by Patriarch Thomas of Jerusalem to the Emperor Leo the Armenian, to defend the veneration of icons. The Emperor had the two brothers tortured and imprisoned; then, as a final insult, he had a condemnation branded (or, by another account, tattooed) on their faces in twelve lines of iambic verse. When the iconoclast persecution ended, Theophanes was freed and was soon made a bishop. In all, he suffered for the holy icons for twenty-five years. Both he and his brother Theodore composed many Canons and hymns, which are still used in the Church's services. He reposed in peace.