Exodus 19:20-22

New International Version - UK

²⁰ The Lord descended to the top of Mount Sinai and called Moses to the top of the mountain. So Moses went up ²¹ and the Lord said to him, ‘Go down and warn the people so they do not force their way through to see the Lord and many of them perish. ²² Even the priests, who approach the Lord, must consecrate themselves, or the Lord will break out against them.’