Exodus 19:16; Exodus 19:19; Exodus 20:18

Exodus 19:16

16 And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.

Exodus 19:19

19 And when the voice of the trumpet sounded long, and waxed louder and louder, Moses spake, and God answered him by a voice.

Exodus 20:18

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.