Exodus 19:16 in the 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.
Context
15 He said to the people, “Be ready by the third day. Don’t have sexual relations with a woman.”
16 On the third day, when it was morning, 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.