Isaiah 64:1

David also said "Lord, bend the skies and come down," and Moses said, "Show me your face that I might see you clearly." For no one saw more closely than Moses when receiving the law of God. God was speaking from the clouds, and [Moses] witnessed that same presence of his majesty. How, since no one saw God closer than he did, could [Moses] demand a view that was closer still when he said, "Show me yourself, that I might see you clearly"? Indeed, we can pray the same thing to happen that the apostle declared already occurred; the Lord openly revealed himself in the flesh and clearly appeared in the world, was openly assumed into glory; the saints saw the things with their physical eyes that they had previously seen with their spiritual sight.

This power is present to you, that of which we did not hear from all time, nor were we able to say (which would be bearing false witness) that someone else was such a God, in the way that our eyes have now seen the effects in such works. We have neither seen God nor divine deeds except from you—to those waiting to see, you provide vision and understanding, which coming from outside ourselves is set in place.… "For no one can see God," and "no one can see my face and live." But it seems that the Christ of God is praised through these things, he who talked with Moses in the desert and was made visible to all people through his glory appearing to all, about which was said, "we have beheld his glory."

(Chapter 64, Verses 1 and following.) Oh, that you would tear open the heavens and come down, so that the mountains would quake before you! As when fire kindles brushwood and the fire causes water to boil, to make your name known to your adversaries, so that the nations might tremble at your presence! When you did awesome deeds that we did not expect, you came down, the mountains quaked at your presence. Chapter 70: If you open the heavens, trembling will seize the mountains from you, and they will melt like wax before fire, and the fire will consume your adversaries, and your name will be made known among your adversaries, and the nations will tremble at your presence. When you have done glorious things, the mountains will tremble because of you. For our enemies have trampled your sanctuary, and we have become like those in the beginning, when your name was not invoked upon us. Therefore, we implore and say: Oh, that you would tear open the heavens and come down; that you, who are always promised, would finally fulfill your promises. But this was said at that time when the Saviour had not yet come, nor had he taken upon himself a human nature and substance from a virgin's womb in order to save humanity: so that as we have borne the image of the earthy, we may bear the image of the heavenly (1 Corinthians 15). But if you were to do it, they say, and the heavens were to open up, or even the heavens, at the coming of your majesty, would flow down, or if trembling were to seize the mountains, and they were to be consumed, as wax is consumed by fire. And the heavens were opened before Ezekiel, and he saw a great vision (Ezek. I). But even Moses, in the blessings of Deuteronomy, implores: May the Lord open his good treasury, the heavens, to give you blessing (Deut. XXVIII). And in the Gospel (Matt. III), it is said (or it is testified) that John the Baptist saw the heavens opened, and the Holy Spirit descending upon the Lord in the form of a dove. But the mountains, which at the coming of the Lord, of whom it is written: God is a consuming fire (Deut. IV, 24), will be consumed like wax and melt, are the opposing powers, and all those who rise up against the knowledge of God. Concerning them, it is also sung in the ninety-sixth psalm: The earth saw and trembled. The mountains melted like wax before the Lord, before the Lord of all the earth (Psalm 96:4, 5). For…