Isaiah 34:4
2 For the Lord is angry at all the nations and furious with all their armies. He will annihilate them and slaughter them. 3 Their slain will be left unburied, their corpses will stink; the hills will soak up their blood. 4 All the stars in the sky will fade away, the sky will roll up like a scroll; all its stars will wither, like a leaf withers and falls from a vine or a fig withers and falls from a tree. 5 He says, “Indeed, my sword has slaughtered heavenly powers. Look, it now descends on Edom, on the people I will annihilate in judgment.” 6 The Lord’s sword is dripping with blood, it is covered with fat; it drips with the blood of young rams and goats and is covered with the fat of rams’ kidneys. For the Lord is holding a sacrifice in Bozrah, a bloody slaughter in the land of Edom.
Pseudo Philo Biblical Antiquities 11:5
3 And Moses did as God commanded him, and sanctified the people and said unto them: Be ye ready on the 3rd day, for after 3 days will God make his covenant with you. And the people were sanctified. 4 And it came to pass on the 3rd day that, lo, there were voices of thunderings (lit. them that sounded) and brightness of lightnings and the voice of instruments sounding aloud. And there was fear upon all the people that were in the camp. And Moses put forth the people to meet God. 5 And behold the mountains burned with fire and the earth shook and the hills were removed and the mountains overthrown: the depths boiled, and all the habitable places were shaken: and the heavens were folded up and the clouds drew up water. And flames of fire shone forth and thunderings and lightnings were multiplied and winds and tempests made a roaring: the stars were gathered together and the angels ran before, until God established the law of an everlasting covenant with the children of Israel, and gave unto them an eternal commandment which should not pass away.
Notes and References
"... Obviously, this Pseudo-Philo description of the Sinai event has been colored with dyes from other theophany texts, which deal with, e.g., the Day of Yahweh. One such text is Isaiah 34, where verse 4 mentions the folding up of the skies. A main function of the theophany here might be to stress the majesty of the God who gives the Law and establishes the covenant with his people ..."
Hartman, Lars Asking for a Meaning: A Study of 1 Enoch 1-5 (p. 43) LiberLäromedel/Gleerup, 1979