He was from Decapolis near the Sea of Galilee, and entered monastic life as a youth. When the Emperor Leo the Isaurian began his persecution of the holy icons, Procopius, who had previously spent his life in hiddenness and silence, boldly stood forth to defend the true Orthodox veneration of the icons. For this he was cruelly tortured and imprisoned. When the cruel Leo died and the icons were restored to the churches, Procopius returned to his monastery, where he lived in peace to a great old age. The Prologue concludes, 'In old age, he entered into God's Kingdom, where he beheld with joy the living angels and saints whose images were on the honoured icons on earth.'