Bede

For whoever is ashamed of me and my words, of him the Son of Man will be ashamed when he comes in his glory and the glory of the Father and of the holy angels. But behold, now men say among themselves: We are now not ashamed of the Lord and his words, because we openly confess him with our voice. To whom I respond that in this Christian assembly there are some who confess Christ because they see that all are Christians. Therefore, the voice of profession is not sufficient for the testing of faith, as the profession of generality defends it from shame. Yet there is a place where each one may question himself, so that he may truly test himself in the confession of Christ. Certainly, in the time of persecution, the faithful could be ashamed of being stripped of their possessions, cast down from dignities, afflicted with scourges: but in the time of peace, since our persecutions are absent, there is another where we may be shown to ourselves. We often fear being despised by our neighbors, we disdain to tolerate verbal injuries: if perhaps a quarrel occurs with a neighbor, we are ashamed to make amends first. For the carnal heart, while seeking the glory of this life, rejects humility.

But I tell you truly, there are some standing here who will not taste death before they see the kingdom of God. The kingdom of God in this place is called the present Church; and because some of the disciples were to live in the body to such an extent that they would see the Church of God constructed and raised against the glory of this world, it is now said with a comforting promise: There are some standing here who will not taste death before they see the kingdom of God. But since the Lord was giving so many precepts of undergoing death, what was necessary that He suddenly came to this promise? Except that something also had to be promised to the unlearned disciples concerning the present life, so that they could be more firmly established in the future, for which He promised them to see the kingdom of God on earth, so that this might be more faithfully presumed by them in heaven. But if we wish to accept the kingdom of God in this sentence as the future blessedness in heaven, even this some of those standing there saw not many days later on the mountain, namely so that by the contemplation of enduring joy, even if briefly experienced, they might more modestly endure the adversities of the passing present age. With a most fitting word, indeed, He testifies that the saints taste death, by whom the death of the body is, of course, tasted by sipping, and the life of the soul is held by possessing.

And it came to pass about eight days after these sayings, that he took Peter and James and John. On the eighth day, the Lord manifests to the disciples the glory of the promised future blessedness, so that, with the sweetness of heavenly life shown, he may refresh the hearts of all who can hear these things, and with the number of eight days, he may teach that the true joy of the resurrection is to come. For he himself rose from the dead on the eighth day, that is, after the sixth day of the Sabbath, on which he ascended the cross, and the seventh day of the Sabbath, on which he rested in the tomb. And we too, after the six ages of this world, in which we rejoice to suffer and labor for the Lord, and the seventh age of the rest of souls, which is meanwhile in another life, will rise again in a kind of eighth age. For that which Matthew and Mark say of the Lord being transfigured after six days does not result in the order of time, nor in the reason of the mystery. Because they only place the intermediate days, therefore they say absolutely that it happened after six days: he here includes both the first and the last, and thus more fittingly mentions about eight days. And this one signifies that the saints must rest from labor after six ages of the world, while the other one designates that we shall rise in the eighth time. Hence also fittingly the sixth psalm is inscribed For the eighth, whose beginning is, O Lord, rebuke me not in your anger. Because indeed after the six ages in which it is permitted to work, it is necessary to insist in prayers that in the eighth time of retribution we are not rebuked by an angry judge. Which indeed the Lord himself wanted to teach us in this place by the example of his prayer being shown, about which it follows:

And it came to pass, while he was praying, the appearance of his face was altered, and his clothing became white and dazzling. The Savior transfigured did not lose the substance of true flesh, but showed the glory of future resurrection, either his or ours. Just as he appeared then to the apostles, so shall he appear to all the elect after judgment. For in the very time of judging both the good and the evil, he will be seen in the form of a servant, so that the impious who spurned him, the Jews who denied him, the soldiers who crucified him, Pilate and Herod who judged him, may recognize the judge. The clothing of the Lord, however, is taken to mean the chorus of his saints, whom the Apostle glorifying says: For as many of you as have been baptized into Christ have put on Christ (Galatians 3). This same attire, while the Lord remained on earth, appeared humble and similar to others, but as he sought the mountain, it shone with new whiteness, for now we are sons of God, and it has not yet appeared what we shall be. We know that when he appears, we shall be like him, for we shall see him as he is (1 John 3). Hence Mark, describing these clothes well, says: such as no launderer on earth can whiten (Mark 9). For the launderer to be understood here is the one whom the penitent Psalmist prays to: Wash me thoroughly from my iniquity, and cleanse me from my sin (Psalm 51), he cannot give his faithful on earth the brightness, which remains preserved for them in heaven.

And behold, two men were speaking with him. They were Moses and Elias, of whom we read that one died, and the other was taken up into heaven. Unless this signifies the future glory of all the saints with the Lord in majesty, who at the time of judgment will reign with him, either found alive in the flesh or resurrected from death tasted long ago. For as the Apostle testifies, "The dead who are in Christ will rise first, then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we shall always be with the Lord" (1 Thess. IV). Alternatively, Moses and Elias, that is, the lawgiver and the greatest of the prophets, appear and speak with the Lord to show that he is the one whom all the writings of the law and the prophets foretold. They appear, however, not in the lowlands, but on the mountain with him, because only those who seek the divine heights with their minds will perceive the majesty of the holy Scripture fulfilled in the Lord. Consequently, even the Jews saw Moses, but they did not merit to follow him as he ascended to God on the mountain. They see him also when he returned, but not without a veil. They knew Elias, but only Elisha with the sons of the prophets beheld the triumph of his ascent, because many of us read the words of Scripture here and there, but very few understand how lofty it shines in the mysteries of Christ.

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.

And it happened, while they were departing from Him, that Peter said to Jesus: Master, it is good for us to be here, and let us make three tents, one for You, one for Moses, and one for Elijah, not knowing what he said. Oh, what great happiness it would be to be present perpetually at the vision of the Deity among choirs of angels, if the transfigured humanity of Christ and the company of two saints seen even momentarily delighted enough for Peter to want to hold them in service so they wouldn't depart! Though in human condition he did not know what to say, he nevertheless showed a sign of the fervor instilled in him. For he did not know what he was saying, who forgot that the kingdom promised by the Lord to the saints was not in some place on earth, but in the heavens, nor could he or his fellow apostles, still burdened with mortal flesh, enter the state of immortal life, nor was a house made with hands necessary in that age. But even now, ignorance is marked by anyone who wishes to make three tents for the law, the prophets, and the Gospel, since these cannot at all be separated from each other, having one tabernacle, that is the Church of God.