Exodus 19:16-18

NHEB(i) 16 It happened on the third day, when it was morning, that there were thunders and lightnings, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet; and all the people who were in the camp trembled. 17 Moses led the people out of the camp to meet God; and they stood at the lower part of the mountain. 18 And Mount Sinai was wrapped in smoke because the LORD descended on it in fire; and its smoke ascended like the smoke of a furnace, and the whole mountain quaked greatly.