Exodus 19:20-22

New Catholic Bible

²⁰ The Lord thus descended upon Mount Sinai, on the mountain peak, and he called out to Moses upon the mountain peak. Moses went up the mountain.

²¹ The Lord said to Moses, “Go down and warn the people not to break through to gaze upon the Lord; otherwise many will die.

²² “Let the priests consecrate themselves before they approach the Lord. Otherwise the Lord will burst forth upon them.”