Exodus 19:14 in the King James Version
And Moses went down from the mount unto the people, and sanctified the people; and they washed their clothes.
Context
13 No hand shall touch him, but he shall surely be stoned or shot through; whether it is animal or man, he shall not live.’ When the trumpet sounds long, they shall come up to the mountain.”
14 Moses went down from the mountain to the people, and sanctified the people; and they washed their clothes.
15 He said to the people, “Be ready by the third day. Don’t have sexual relations with a woman.”