Exodus 19:21 DBY

¹⁹  And the sound of the trumpet increased and became exceeding loud; Moses spoke, and God answered him by a voice.

²⁰  And Jehovah came down on mount Sinai, on the top of the mountain; and Jehovah called Moses to the top of the mountain, and Moses went up.

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.