Theophanes the Greek. The Transfiguration. Early 15th century.
Christ's Tabor radiance is a kind of mirror in which we glimpse the glory that God wills to give his friends. The resplendence of the Transfiguration reveals the fullness of life destined to be ours. The Transfiguration invites us to configuration. We peer into the glory that pours from every pore of the transfigured Christ, we cast off everything unworthy of our personal relationship with the Infinite, and we take on the luster of the Son of God. Jesus gazes back at us with a luminous look of love that make us desire to live his transparent beauty -- to be luminaries. Silently from Tabor's splendor, the Savior begs: "Become what you behold!"
Meditation from Magnificat
What is revealed here is not only the glory of pure, angelic spirit, but of the spirit through the body, glory of the spiritualized body of man. Not the glory of God alone, not a piece of disclosed heaven, not only the sheen of the Lord as it hovered over the ark of the covenant, but the glory of the God-Logos in the Son of Man. Life above live and death; life of the body, but issue of the spirit; life of the spirit, but issue of the Logos; life of the man Jesus, but issue of the Son of God.
Romano Guardini, The Lord