§ 02 · King James Bible
Exodus 19:18
And mount Sinai was altogether on a smoke, because the LORD descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.
Simple English
Mount Sinai was covered in smoke since God came down in fire. The smoke rose like that from a big furnace, and the entire mountain shook a lot.
* Work in progress - there may be occasional inaccuracies