Fire: God Appeared In
Source: TTT
Exodus 3:2
There the angel of the LORD appeared to him in a blazing fire from within a bush. Moses saw the bush ablaze with fire, but it was not consumed.
Exodus 19:18
Mount Sinai was completely enveloped in smoke, because the LORD had descended on it in fire. And the smoke rose like the smoke of a furnace, and the whole mountain quaked violently.