Exodus 19:21-23

Darby Translation

²¹ And Jehovah said to Moses, Go down, testify to the people that they break not through to Jehovah to gaze, and many of them perish.

²² And the priests also, who come near to Jehovah, shall hallow themselves, lest Jehovah break forth on them.

²³ And Moses said to Jehovah, The people cannot come up to mount Sinai; for thou hast testified to us, saying, Set bounds about the mountain, and hallow it.