Luke 14:34-35

Therefore salt is good: but if the salt may lose its savor, with what shall it be salted?

Luke 17:29

and on the day on which Lot went out from Sodom, fire and brimstone rained from heaven and destroyed them all.

Revelation 19:20

And the beast, and the false prophet along with him, who wrought miracles in his presence, by which he deceived those having received the mark of the beast, and those worshiping his image; and the two were cast alive into the lake of fire which burns with brimstone.

Treasury of Scripture Knowledge

Summary

And that the whole land thereof is brimstone, and salt, and burning, that it is not sown, nor beareth, nor any grass groweth therein, like the overthrow of Sodom, and Gomorrah, Admah, and Zeboim, which the LORD overthrew in his anger, and in his wrath:

Salt

General references

Bible References

Brimstone

Luke 17:29
and on the day on which Lot went out from Sodom, fire and brimstone rained from heaven and destroyed them all.
Revelation 19:20
And the beast, and the false prophet along with him, who wrought miracles in his presence, by which he deceived those having received the mark of the beast, and those worshiping his image; and the two were cast alive into the lake of fire which burns with brimstone.

Salt

Luke 14:34
Therefore salt is good: but if the salt may lose its savor, with what shall it be salted?

General references

Luke 17:29
and on the day on which Lot went out from Sodom, fire and brimstone rained from heaven and destroyed them all.