St Athanasius of Mount Sinai on the New Sabbath, and on St Thomas the Apostle.
On Holy Images — translated by Mary H. Allies
Those who saw Christ in the flesh looked upon Him as a prophet. We, who have not seen Him, have confessed Him from our childhood to be the great and Almighty God Himself, the Creator of eternity, and splendour of the Father. We listen with faith to His Gospel, as if we saw Christ Himself speaking.And receiving the pure treasure of His body, we believe that Christ Himself is acting in us. And if we see only the image of His divine form, as if looking down upon us from heaven, we prostrate and adore. Great is now the faith of Christ.
Translated by Mary H. Allies. Edition opa.patristics.john-of-damascus.on-holy-images.en.