Exodus 19:22-24

Amplified Bible, Classic Edition

²² And also let the priests, who come near to the Lord, sanctify (set apart) themselves [for God], lest the Lord break forth against them.

²³ And Moses said to the Lord, The people cannot come up to Mount Sinai, for You Yourself charged us, saying, Set bounds about the mountain and sanctify it [set it apart for God].

²⁴ Then the Lord said to him, Go, get down and you shall come up, you and Aaron with you; but let not the priests and the people break through to come up to the Lord, lest He break forth against them.