12 Mark a boundary around the mountain that the people must not cross, and tell them not to go up the mountain or even get near it. If any of you set foot on it, you are to be put to death;
13 you must either be stoned or shot with arrows, without anyone touching you. This applies to both people and animals; they must be put to death. But when the trumpet is blown, then the people are to go up to the mountain.”
14 Then Moses came down the mountain and told the people to get ready for worship. So they washed their clothes,
15 and Moses told them, “Be ready by the day after tomorrow and don't have sexual intercourse in the meantime.”
16 On the morning of the third day there was thunder and lightning, a thick cloud appeared on the mountain, and a very loud trumpet blast was heard. All the people in the camp trembled with fear.
17 Moses led them out of the camp to meet God, and they stood at the foot of the mountain.
18 All of Mount Sinai was covered with smoke, because the Lord had come down on it in fire. The smoke went up like the smoke of a furnace, and all the people trembled violently.