Mr. Kreeft remains one of my all-time favorites.
“The first thing to get clear about this “transfiguration” is that is was not a transfiguration of Jesus’ reality but of the disciples’ vision. Jesus did not change and become brighter than light. He always was and is brighter than light. (He is not a little bit like light; light is a little bit like Him.) It was the disciples’ eyes that were changed. God enabled them to see what is instead of just what appears. He lifted the curtain.”