There he was transfigured before them. His face shone like the sun, and his clothes became as white as the light.
The transfiguration of Jesus is often overlooked in the gospels as a bit of theological trivia or something interesting but not very important. The transfiguration of Christ is a glimpse of the glory of Christ however.
Jesus left the glory of heaven and took on human flesh. This is what Christmas is all about and the theological side of this is discussed in “Christ’s Humility.”
It is difficult for us to comprehend that Jesus was God in flesh. We believe that He is the Messiah that the Israelites had waited for. We believe that He died for our sins. We can even partially grasp the concept that Jesus was the son of God. But we have great difficulty understanding that Jesus is God along with God the Father and the Holy Spirit.
As Jesus is transfigured, the disciples who are with Him get a brief glimpse of His glory. When Moses communed with God he had to put a veil over his face when he returned because the glory of God reflected off of his face and the people were terrified of it. For just a brief moment Jesus pulls back the veil of His humanity and His disciples can see who He really is.