The presence of God moves everything
The Earth Shook The Heavens also dropped at the presence of God
even Sinai itself was moved at the presence of God
Psalms 68:7-8 AMP
O God, when you went out before your people, when you marched through the wilderness, Selah. The earth trembled; the heavens also poured down rain at the presence of God; Sinai itself trembled at the presence of God, the God of Israel.
refers to the story in Exodus 19:16-19 KJV
And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled. And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount. And mount Sinai was altogether on a smoke, because the Lord descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked gently. And when the voice of the trumpet sounded long, and waxed louder and louder, Moses spake, and God answered him by a voice. (Also read Genesis 15:17 and Revelation 15:8 in reference to smoke from God) (Also read 2 Chronicles 7:1 in reference to fire)
Deuteronomy 4:10-15 Specially the day that thou stoodest before the Lord thy God in Horeb when the Lord said unto me, Gather me the people together, and I will make them hear my words, that they may hear my words, that they may learn to fear me all the days that they shall live upon the earth, and that they may teach their children. And ye came near and stood under the mountain, and the mountain burned with fire unto the midst of heaven, with darkness, clouds, and thick darkness. And the Lord spake unto you out of the midst of the fire: ye heard the voice of the words, but saw no similitude; only ye heard a voice. .....