Exodus 19:16-19 And it came to pass on the third day, when it was morning, that there were thunders and lightnings and a thick cloud upon the mount, and the voice of a horn exceeding loud; and all the people that were in the camp trembled.

JPS_ASV_Byz⁽ⁱ⁾ ¹⁶ And it came to pass on the third day, when it was morning, that there were thunders and lightnings and a thick cloud upon the mount, and the voice of a horn exceeding loud; and all the people that were in the camp trembled. ¹⁷ And Moses brought forth the people out of the camp to meet God; and they stood at the nether part of the mount. ¹⁸ Now mount Sinai was altogether on 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 greatly. ¹⁹ And when the voice of the horn waxed louder and louder, Moses spoke, and God answered him by a voice.