Exodus 19:23-25 New American Bible, Revised Edition (NABRE)

23. But Moses said to the Lord, “The people cannot go up to Mount Sinai, for you yourself warned us, saying: Set limits around the mountain to make it sacred.”

24. So the Lord said to him: Go down and come up along with Aaron. But do not let the priests and the people break through to come up to the Lord; else he will break out against them.”

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

Exodus 19