And suddenly looking round about, they saw no one any more, save Jesus only with themselves. St. Matthew here says (Matthew 17:6), "When the disciples heard it, they fell on their face, and were sere afraid.
And Jesus came and touched them, and said, Arise, and be not afraid." St. Mark omits this; but in his characteristic manner states that which implies what St. Matthew has recorded. It was the "touch" of Jesus that caused them to look round about; and then in a moment they perceived that they were alone with Jesus, as they were before this manifestation began.
The order of incidents in the Transfiguration appears to have been this: Our Lord is praying. The disciples, fatigued with the ascent of the mountain, are heavy with sleep; and Christ is transfigured.
Then appear Moses and Elijah; and they are talking with Jesus about his exodus—his decease to be accomplished at Jerusalem. The disciples mused from their sleep by the supernatural brightness, and by the conversation, and now, fully awake, behold the glory of Jesus, and Hoses and Elijah talking with him.
As Moses and Elijah are preparing for their departure, Peter, excited, enchanted, bewildered, and yet grieved to see that they were going, seeks to detain them by the proposal to make some temporary resting-place for them.
Then comes the bright overshadowing cloud, and a voice out of the cloud, "This is my beloved Son: hear ye him." At the sound of this voice the disciples fall terrified to the earth. But they are soon comforted by Christ, and, looking up, they see him alone with themselves.