'Brimstone' in the Bible

For a Topheth is prepared of old; yea, for the king it is made ready; he hath made it deep and large; the pile thereof is fire and much wood; the breath of Jehovah, like a stream of brimstone, doth kindle it.

And the streams of Edom'shall be turned into pitch, and the dust thereof into brimstone, and the land thereof shall become burning pitch.