Exodus 19:13-15

New Century Version

¹³ with stones or shot with arrows. No one is allowed to touch him. Whether it is a person or an animal, he will not live. But the trumpet will make a long blast, and only then may the people go up on the mountain.”

¹⁴ After Moses went down from the mountain to the people, he made them prepare themselves for service to God, and they washed their clothes. ¹⁵ Then Moses said to the people, “Be ready in three days. Do not have sexual relations during this time.”