Exodus 19:16
King James Version
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.
Exodus 19:16 in context
And Moses went down from the mount unto the people, and sanctified the people; and they washed their clothes.
And he said unto the people, Be ready against the third day: come not at your wives.
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 greatly.