Deuteronomy 4:11
So ye drew near and stood, under the mountain. Now, the mountain, was burning with fire, up to the midst of the heavens, - darkness, cloud, and thick gloom.
Deuteronomy 5:23
And it came to pass, when ye heard the voice out of the midst of the darkness, the mountain also burning with fire, then drew ye near unto me, even all the heads of your tribes and your elders,
Exodus 19:16-18
And it came to pass on the third day, when the morning had come, that there were thunderings and lightnings, and a heavy cloud upon the mount, and the sound of a horn, loud exceedingly, - and all the people who were in the camp trembled.
Exodus 20:18-19
And, all the people, were witnessing the voices and the torches, and the sound of the horn, and the mountain smoking, - so then the people were struck with awe and shrank back, and stood afar off.
Hebrews 12:18-19
For ye have not approached - unto, a searching and scorching fire, and gloom, and mist, and tempest,