English Standard Version
Now Mount Sinai was wrapped in smoke because the LORD had descended on it in fire. The smoke of it went up like the smoke of a kiln, and the whole mountain trembled greatly.New International Version
Mount Sinai was covered with smoke, because the LORD descended on it in fire. The smoke billowed up from it like smoke from a furnace, the whole mountain trembled violently,Catholic Public Domain Version
Then all of Mount Sinai was smoking. For the Lord had descended over it with fire, and smoke ascended from it, as from a furnace. And the entire mountain was terrible