And it came to pass, when ye heard the voice out of the midst of the darkness, (for the mountain did burn with fire,) that ye came near unto me, even all the heads of your tribes, and your elders;
Exodus 20:18
And all the people saw the thunderings, and the lightnings, and the noise of the trumpet, and the mountain smoking: and when the people saw it, they removed, and stood afar off.
Exodus 20:19
And they said unto Moses, Speak thou with us, and we will hear: but let not God speak with us, lest we die.
Hebrews 12:18-21
18
For ye are not come unto the mount that might be touched, and that burned with fire, nor unto blackness, and darkness, and tempest,
19
And the sound of a trumpet, and the voice of words; which voice they that heard intreated that the word should not be spoken to them any more:
20
For they could not endure that which was commanded, And if so much as a beast touch the mountain, it shall be stoned, or thrust through with a dart:
21
And so terrible was the sight, that Moses said, I exceedingly fear and quake:)