Exodus 19:21-23

Wycliffe Bible

²¹ the Lord said to him, Go thou down, and witness thou to the people, lest peradventure it will pass [over] the terms to see the Lord (lest they pass over the boundary to see the Lord), and [a] full great multitude thereof perish;

²² and [the] priests, that nigh to the Lord, be they hallowed, lest I smite them (or I shall strike them down).

²³ And Moses said to the Lord, The common people may not go up into the hill of Sinai; for thou hast witnessed, and hast commanded, saying, Set thou terms about the hill, and hallow it. (And Moses said to the Lord, The common people cannot come up onto Mount Sinai; for thou hast witnessed, and hast commanded, saying, Set thou a sacred boundary all around the mountain, and hallow it, and they have heard thee.)