Exodus 19:20-23
English Standard Version
21And the Lord said to Moses, "Go down and warn the people, lest they break through to the Lord to look and many of them perish.
22Also let the priests who come near to the Lord consecrate themselves, lest the Lord break out against them."
23And Moses said to the Lord, "The people cannot come up to Mount Sinai, for you yourself warned us, saying, ‘Set limits around the mountain and consecrate it.’"
