Exodus 19:19-21

American Standard Version

¹⁹ And when the voice of the trumpet waxed louder and louder, Moses spake, and God answered him by a voice. ²⁰ And Jehovah came down upon mount Sinai, to the top of the mount: and Jehovah called Moses to the top of the mount; and Moses went up. ²¹ And Jehovah said unto Moses, Go down, charge the people, lest they break through unto Jehovah to gaze, and many of them perish.