Luke 9:34

(in Matt. tom. 12.) Now His disciples being unable to bear this, fell down, humbled under the mighty hand of God, greatly afraid since they knew what was said to Moses, No man shall see my face, and lice. Hence it follows, And they feared as they entered into the cloud.

(non occ.) Peter also was ignorant what he said, seeing that it was not proper to make three tabernacles for the three. For the servants are not received with their Lord, the creature is not placed beside the Creator.

(in Esai. c. 4. 5.) For the obscurity of the Law had passed away; for as smoke is caused by the fire, so the cloud by light; but because a cloud is the sign of calmness, the rest of the future state is signified by the covering of a cloud.

He was bright as the lightning on the mountain and became more luminous than the sun, initiating us into the mystery of the future.

Or else, according to your capacity is the word either lessened or increased to you, and unless you ascend the summit of a higher wisdom, you behold not what glory there is in the word of God. Now the garments of the Word, are the discourses of the Scriptures, and certain clothings of the Divine mind; and as His raiment shone white, so in the eyes of your understanding, the sense of the divine words becomes clear. Hence after Moses, Elias; that is, the Law and the Prophets in the Word. For neither can the Law exist without the Word, nor the Prophet, unless he prophesied of the Son of God.

For the incomprehensible brightness of the Divine nature oppresses our bodily senses. For if the sight of the body is unable to contain the sun's ray when opposite to the eyes which behold it, how can the corruption of our fleshly members endure the glory of God? And perhaps they were oppressed with sleep, that after their rest they might behold the sight of the resurrection. Therefore when they were awake they saw His glory. For no one, except he is watching, sees the glory of Christ. Peter was delighted, and as the allurements of this world enticed him not, was carried away by the glory of the resurrection. Hence it follows, And it came to pass as they departed, &c.

But Peter distinguished not only by earnest feeling, but also by devout deeds, wishing like a zealous workman to build three tabernacles, offers the service of their united labour; for it follows, Let us make three tabernacles, one for thee, &c.

Nor does the condition of man in this corruptible body allow of making a tabernacle to God, whether in the soul or in the body, or in any other place; and although he knew not what he said, yet a service was offered which not by any deliberate forwardness, but its premature devotion, receives in abundance the fruits of piety. For his ignorance was part of his condition, his offer of devotion.

For it is the overshadowing of the divine Spirit which does not darken, but reveals secret things to the hearts of men.

Now observe, that the cloud was not black from the darkness of condensed air, and such as to overcast the sky with a horrible gloom, but a shining cloud, from which we were not moistened with rain, but as the voice of Almighty God came forth the dew of faith was shed upon the hearts of men. For it follows, And there came a voice out of the cloud, saying, This is my beloved Son: hear ye him. Elias was not His Son. Moses was not. But this is the Son whom you see alone.

They then departed, when our Lord's manifestation had begun. There are three seen at the beginning, one at the end; for faith being made perfect, they are one. Therefore are they also received into the body of Christ, because we also shall be one in Christ Jesus; or perhaps, because the Law and the Prophets came out from the Word.

Peter saw this grace, and so did those who were with him, although they were heavy with sleep. The incomprehensible magnificence of the Godhead overwhelms the perceptions of our body. If the sharpness of bodily vision cannot bear the ray of the sun directly into watching eyes, how may the corruption of human members endure the glory of God? The garment of the body, purer and finer after the removal of the materiality of vices, is made for the resurrection. Perhaps they were so heavy with sleep that they saw the radiance of the resurrection after their rest. Keeping vigil, they saw his majesty, because no one sees the glory of Christ unless he is vigilant.

It says, “It is good for us to be here.” “My desire is to depart and be with Christ, for that is far better.” The diligent workman is not content to praise. Even more admirable, not only in affection but also in pious deeds, he promises a ministry of common worship for the building of three tabernacles. Although he did not know what he said, he promised an observance that does not heap up the fruits of piety in indiscreet carelessness but in untimely zeal. His ignorance came from his condition, but his promise from his devotion. The human condition is corruptible in this. This mortal body is not capable of making a tabernacle for God.

“While he spoke, there came a cloud, and overshadowed them.” That is the overshadowing of the divine Spirit, who is not dark with the emotions of humankind but unveils secrets. This is also revealed in another place when an angel says, “And the power of the Most High shall overshadow you.” The effect of this is shown when the voice of God is heard, saying, “This is my beloved Son; hear him.” Elijah is not the Son, and Moses is not the Son. This is the Son whom only you see, because they had withdrawn when he began to be described as Lord.… It was a luminous cloud that does not soak us with rainwater or the downpour of storm, but from dew that sprinkles the minds of men with faith sent by the voice of almighty God.

(Hom. 56. in Matt.) Or, by the word sleep, he means that strange maze that fell upon them by reason of the vision. For it was not night time, but the exceeding brightness of the light weighed down their weak eyes.

(ubi sup.) Or else Peter heard that it was necessary Christ must die, and on the third day rise again, but he saw around him a very remote and solitary place; he supposed therefore that the place had some great protection. For this reason he said, It is good for us to be here. (Exod. 24:15, 2 Kings 1:12.) Moses, too was present, who entered into the cloud. Elias, who on the mount brought down fire from heaven. The Evangelist then, to indicate the confusion of mind in which he utters this, added, Not knowing what he said.

And mark, that as when our Lord was baptized in Jordan, so also when He was glorified on the Mount, the mystery of the whole Trinity is declared; for His glory which we confess at baptism, we shall see at the resurrection. Nor in vain does the Holy Spirit appear here in the cloud, there in the form of a dove, seeing that he who now preserves with a simple heart the faith which he receives, shall then in the light of open vision look upon those things which he believed.

The Father’s voice did not forbid them to listen to Moses and Elijah (that is, to the Law and the Prophets). It rather suggested to all of them that listening to his Son was to take precedence since he came to fulfill the Law and the Prophets. It impressed on them that the light of gospel truth was to be put ahead of all the types and obscure signs of the Old Testament. By the benevolent, divinely arranged plan when the moment of the cross was drawing near, he strengthened them so that the disciples’ faith might not falter when the Lord was crucified. He revealed to them how also his humanity was to be lifted up by heavenly light through his resurrection. The heavenly voice of the Father gave assurance that the Son was coeternal to the Father in his divinity so that when the hour of the passion approached, they would be less sorrowful at his dying. They remembered that after his death he would soon be glorified as a human being, although in his divinity he had always been glorified by God his Father.Since the disciples were fleshly and still fragile in substance, they were afraid and fell upon their faces when they heard God’s voice. Since the Lord was a benevolent master in everything, he consoled them at the same time by his word and his touch, and he lifted them up.

While he was speaking, a cloud came and overshadowed them. He who sought a material tabernacle received the shadow of the cloud, so that he might learn that in the resurrection, the saints are to be protected not by the covering of houses, but by the glory of the Holy Spirit. About which the Psalmist says: But the sons of men shall hope in the covering of your wings (Psalm 56). And in his Apocalypse, John says: And I did not see a temple in it, for the Lord God Almighty and the Lamb are its temple (Revelation 21).

(Orat. de Trans. fig.) It were not good for thee, Peter, that Christ should abide there, for if He had remained, the promise made to thee would never receive its accomplishment. For neither wouldest thou have obtained the keys of the kingdom, nor the tyranny of death been abolished. Seek not bliss before its time, as Adam did to be made a God. The time shall come when thou shalt enjoy the sight without ceasing, and dwell together with Him who is light and life.

(ubi sup.) But the Lord ordained thee not the builder of tabernacles, but of the universal Church. Thy words have been brought to pass by thy disciples, by thy sheep, in building a tabernacle, not only for Christ, but also for His servants. But Peter said not this deliberately, but through the inspiration of the Spirit revealing things to come, as it follows, not knowing what he said.

(ubi sup.) It behoved Him also not to confine the fruit of His incarnation to the service of those only who were on the mount, but to extend it to all believers, which was to be accomplished by His cross and passion.

(ubi sup.) This also our Lord commands, since He knew His disciples to be imperfect, seeing that they had not yet received the full measure of the Spirit, lest the hearts of others who had not seen should be prostrated by sorrow, and lest the traitor should be stirred up to a frantic hatred.

While Christ is engaged in prayer, Peter is heavy with sleep, for he was weak, and did what was natural to man; as it is said, But Peter and they that were with him were heavy with sleep. But when they awake, they behold His glory, and the two men with Him; as it follows, And when they were awake, they saw his glory, and the two men, that stood with him.

But while Peter spake, our Lord builds a tabernacle not made with hands, and enters into it with the Prophets. Hence it is added, While he thus spake there came a cloud and overshadowed them, to show that He was not inferior to the Father. For as in the Old Testament it was said, the Lord dwelt in the cloud, so now also a cloud received our Lord, not a dark cloud, but bright and shining.

Lest in truth any one should suppose that these words, This is my beloved Son, were uttered about Moses or Elias.

Now those things which began from the Word, end in the Word. For by this he implies that up to a certain time the Law and the Prophets appear, as here Moses and Elias; but afterwards, at their departure, Jesus is alone. For now abideth the Gospel, legal things having passed away.

The Transfiguration and the walking on the water are glimpses of the beauty and the effortless power over all matter which will belong to men when they are really waked by God.