81. Peter, when he saw Moses and Elias on the mountain, with the Son of God, was not deceived as to their nature and glory. For he enquired, not of them, but of Christ, what he ought to do, inasmuch as though he prepared to do homage to all three, yet he waited for the command of one. But since he ignorantly thought that for three persons three tabernacles should be set up, he was corrected by the sovereign voice of God the Father, saying, “This is My dearly beloved Son: hear ye Him.” S. Matt. xvii. 5. That is to say: “Why dost thou join thy fellow-servants in equality with thy Lord?” “This is My Son.” Not “Moses is My Son,” nor “Elias is My Son,” but “This is My Son.” The Apostle was not dull to understand the rebuke; he fell on his face, brought low by the Father’s voice and the glorious beauty of the Son, but he was raised up by the Son, Whose wont it is to raise up them that are fallen. S. Matt. xvii. 6–8. Then he saw one only, S. Matt. xvii. 8. the Son of God alone, for the servants had withdrawn, that He might be seen to be Lord alone, Who alone was entitled Son.