11 And ye came near and stood under the mountain, and the mountain burned with fire to the heart of heaven, with darkness, cloud, and thick darkness.
Deuteronomy 4:11 Cross References - ACV
Exodus 19:16-18
16 And it came to pass on the third day, when it was morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of an exceedingly loud trumpet. And all the people who were in the camp trembled.
17 And Moses brought forth the people out of the camp to meet God, and they stood at the lower part of the mount.
18 And mount Sinai, the whole of it, smoked, because LORD descended upon it in fire, and the smoke of it ascended as the smoke of a furnace. And the whole mount quaked greatly.
Exodus 20:18-19
Deuteronomy 5:23
23 And it came to pass, when ye heard the voice out of the midst of the darkness, while the mountain was burning with fire, that ye came near to me, even all the heads of your tribes, and your elders.