The Lord appeared to Moses in the light of the burning bush. (Ex 3:1-14) Later Moses’ face would shine with the light of God’s glory when he came down from Mount Sinai. (Ex 34:29-35) Now Moses and Elijah appear with Him who is the Light of Light Himself on the Mount of Transfiguration. (Mt 17:1-9) Jesus’ glory as God shines with brilliant splendor in and through His human nature. By this epiphany, our Lord confirmed the prophetic word (2 Pet 1:16-21), revealing that He is the fulfillment of the Law and the Prophets. He manifested His majesty as the eternal Son of the Father. And He wonderfully foreshowed our adoption as sons. (Collect) For in this event we who have been baptized into Christ’s body are given a glimpse of the glory that we will share with Him in the resurrection on the Last Day.