Luke 14:34-35

Salt is excellent indeed: but if salt becomes insipid, what will restore its flavour?

Luke 17:29

but on the day that Lot left Sodom it rained fire and brimstone from heaven and destroyed them all.

Revelation 19:20

But the Beast was seized, together with the false Prophet who had performed in his presence the miracles by means of which he seduced those who received the mark of the Beast and worshipped his statue; both of them were flung alive into the lake of fire that blazes 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
but on the day that Lot left Sodom it rained fire and brimstone from heaven and destroyed them all.
Revelation 19:20
But the Beast was seized, together with the false Prophet who had performed in his presence the miracles by means of which he seduced those who received the mark of the Beast and worshipped his statue; both of them were flung alive into the lake of fire that blazes with brimstone,

Salt

Luke 14:34
Salt is excellent indeed: but if salt becomes insipid, what will restore its flavour?

General references

Luke 17:29
but on the day that Lot left Sodom it rained fire and brimstone from heaven and destroyed them all.