'Brimstone' in the Bible

For Topheth [in Hinnom] has long been ready;Indeed, it has been prepared for the [Assyrian] king.He has made it deep and wide,A pit of fire with plenty of wood;The breath of the Lord, like a river of brimstone (blazing sulfur), kindles and fans it.

The streams [of Edom] will be turned into pitch,And its dust into brimstone,And its land will become burning pitch.