Exodus 19:20-25

20The Lord came down on top of Mount Sinai and called Moses to the top of the mountain. So Moses went up.

21The Lord said to him, “Go down and warn the people not to force their way through ⌞the boundary⌟ to see the Lord, or many of them will die.

22Even the priests who are allowed to come near the Lord must set themselves apart as holy, or the Lord will violently kill them.”

23Moses said to the Lord, “The people can’t come up Mount Sinai, because you warned us yourself to mark off a boundary around the mountain and consider it holy.”

24The Lord said to him, “Go down, and bring Aaron back with you. But the priests and the people must not force their way through the boundary to come up to the Lord, or he will violently kill them.”

25So Moses went down to the people and told them.