The disciples could not sleep through all this. "When they were fully awake, they saw His glory, and the two men that stood with Him" (Luke ix. 32, R.V.). How they recognised them we are not told. It may have been through their conversation, which in part at least they understood; for the substance of it has been preserved in St. Luke's Gospel, where we read that they "spake of His decease (literally, _exodus_) which He should accomplish at Jerusalem." The human soul of Jesus no doubt longed for an exodus here and now, from this very height of Hermon into the presence of God; but He knows this cannot be: His exodus must be accomplished in a very different way, and at Jerusalem. This Moses and Elijah knew; and their words must have brought Him encouragement and strength, and given steadiness and assurance to the wavering hearts of Peter, James and John.
That the conversation was intended for their benefit as well, seems indicated by the way in which Peter's intervention is recorded: "Then _answered_ Peter, and said unto Jesus." What he said is quite characteristic of the impulsive disciple, so ready to speak without thinking. On this occasion he blunders in a very natural and pardonable way. He feels as if he ought to say something; and, as nothing more to the purpose occurs to him, he blurts out his thoughtless proposal to make three tabernacles for their abode. Besides the thoughtlessness of this speech, which is manifest enough, there seems to lurk in it a sign of his falling back into the very error which a week ago he had renounced--the error of putting his Master in the same class as Moses and Elias, reckoning Him thus, as the people of Galilee had done, simply as "one of the prophets." If so, his mistake is at once corrected; for behold a bright luminous cloud--fit symbol of the Divine presence: the cloud suggesting mystery, and the brightness, glory--wraps all from sight, and out of the cloud there comes a voice: "This is My beloved Son, in Whom I am well pleased; hear ye Him."
We now see how appropriate it was that just these two should be the heavenly messengers to wait upon the Son of man on this occasion. The one represented the law, the other the prophets. "The law and the prophets were until John;" but both are now merged in the gospel of Jesus, Who is all and in all. Moses and Elijah have long had audience of the people of God; but behold a greater than Moses or Elijah is here, and they must withdraw; and accordingly, when the Voice is silent and the cloud has cleared away, Jesus is left alone. No one remains to divide His authority, and none to share His sorrow. He must tread the winepress alone. Moses and Elijah return to the world of spirits--Jesus, God's beloved Son, to the world of men. And all His human sympathies were fresh and quick as ever; for, finding His three disciples fallen on their faces for fear, He came and touched them, saying, "Arise, and be not afraid." They no doubt thought their Lord had laid aside His human body, and left them all alone upon the mountain; but with His human hand He touched them, and with His human voice He called them as of old, and with His human heart He welcomed them again. Reassured, they lifted up their eyes, and saw their Lord--the man Christ Jesus as before--and no one else. All is over; and as the world is unprepared for it, the vision is sealed until the Son of man be risen from the dead.
Why were their lips sealed? The more we think of it, the more we shall see the wisdom of this seal of secrecy, even from the other nine; for had they been prepared to receive the revelation, they would have been privileged to witness it. The transfiguration was no mere wonder; it was no sign granted to incredulity: it was one of those sacred experiences for rare spirits in rare hours, which nature itself forbids men to parade, or even so much as mention, unless constrained to it by duty.