Exodus 19:14-16

21st Century King James Version

¹⁴ And Moses went down from the mount unto the people, and sanctified the people; and they washed their clothes.

¹⁵ And he said unto the people, “Be ready against the third day. Come not at your wives.”

¹⁶ 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 who were in the camp trembled.