Exodus 19:18

15 and he saith unto the people, `Be ye prepared for the third day, come not nigh unto a woman.`

16 And it cometh to pass, on the third day, while it is morning, that there are voices, and lightnings, and a heavy cloud, on the mount, and the sound of a trumpet very strong; and all the people who [are] in the camp do tremble.

17 And Moses bringeth out the people to meet God from the camp, and they station themselves at the lower part of the mount,

18 and mount Sinai [is] wholly a smoke from the presence of Jehovah, who hath come down on it in fire, and its smoke goeth up as smoke of the furnace, and the whole mount trembleth exceedingly;

19 and the sound of the trumpet is going on, and very strong; Moses speaketh, and God doth answer him with a voice.

20 And Jehovah cometh down on mount Sinai, unto the top of the mount, and Jehovah calleth for Moses unto the top of the mount, and Moses goeth up.

21 And Jehovah saith unto Moses, `Go down, protest to the people, lest they break through unto Jehovah to see, and many of them have fallen;