Every now and then, we see someone whose face, maybe even his or her whole being, appears radiant. People speak of brides and grooms as glowing with joy. It is even more than joy. It might appear when parents first behold their child, or see that child accomplish something wonderful. We seem to glow in moments of genuine fulfillment and love. When we understand what has caused that sort of feeling to shine forth from others, we get a glimpse of their deepest desires and the essence of who they are. That is what the disciples saw happen to Jesus as he prayed on the mountain.