Luke 14:34

salt is good, but if the salt has lost its savour, with what shall it be recovered?

Matthew 5:13

Ye are the salt of the earth; but if the salt become insipid, how shall it recover its savour? it is no longer fit for any thing, but to be cast out and trod under foot.

Mark 9:49-50

such a one shall be consumed by fire, but the offering that is salted shall be preserv'd from corruption.

Colossians 4:6

let an air of modesty appear in all your discourse; and let it be seasoned with discretion, in making a proper reply, when you are call'd into question.

Hebrews 2:4-8

God also giving an additional testimony both by signs, by prodigies, by divers miracles, and gifts of the holy spirit, which he distributes as he pleases.

Treasury of Scripture Knowledge

Summary

Salt is good: but if the salt have lost his savour, wherewith shall it be seasoned?

Bible References

But

Matthew 5:13
Ye are the salt of the earth; but if the salt become insipid, how shall it recover its savour? it is no longer fit for any thing, but to be cast out and trod under foot.
Mark 9:49
such a one shall be consumed by fire, but the offering that is salted shall be preserv'd from corruption.
Colossians 4:6
let an air of modesty appear in all your discourse; and let it be seasoned with discretion, in making a proper reply, when you are call'd into question.
Hebrews 2:4
God also giving an additional testimony both by signs, by prodigies, by divers miracles, and gifts of the holy spirit, which he distributes as he pleases.