Exodus 19:22 in the King James Version
And let the priests also, which come near to the LORD, sanctify themselves, lest the LORD break forth upon them.
Context
21 The LORD said to Moses, “Go down, warn the people, lest they break through to the LORD to gaze, and many of them perish.
22 Let the priests also, who come near to the LORD, sanctify themselves, lest the LORD break out on them.”
23 Moses said to the LORD, “The people can’t come up to Mount Sinai, for you warned us, saying, ‘Set bounds around the mountain, and sanctify it.’”