Exodus 19:13-16

No hand shall touch him, but he shall be stoned or shot; whether beast or man, he shall not live.’ When the trumpet sounds a long blast, they shall come up to the mountain.” So Moses went down from the mountain to the people and consecrated the people; and they washed their garments. And he said to the people, “Be ready for the third day; do not go near a woman.” On the morning of the third day there were thunders and lightnings and a thick cloud on the mountain and a very loud trumpet blast, so that all the people in the camp trembled.