fire

Definition:

Fire is the heat, light, and flames that are produced when something is burned.

Burning wood by fire turns the wood into ashes.
The term "fire" is also used figuratively, usually referring to judgment or purification.
The final judgment of unbelievers is in the fire of hell.
Fire is used to refine gold and other metals. In the Bible, this process is used to explain how God refines people through difficult things that happen in their lives.
The phrase "baptize with fire" could also be translated as "cause to experience suffering in order to be purified."

(See also: pure)