Figurative:
* "The preacher spoke of the fires of brimstone awaiting sinners." (This uses brimstone as a metaphor for hellfire.)
* "The accusations flew thick and fast, each word like a piece of brimstone scorching her reputation." (This uses brimstone to describe the intensity of the accusations.)
Literal:
* "The ancient alchemists used brimstone in their experiments." (This refers to the literal chemical compound.)
* "The volcanic eruption spewed out clouds of ash and brimstone." (This refers to the sulfurous smell of the volcanic gases.)
You can also use the word "brimstone" as an adjective:
* "The brimstone smell permeated the air."
* "The brimstone fumes choked the air."
The best way to use the word "brimstone" depends on the context and the desired effect.