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.

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.

Treasury of Scripture Knowledge

Summary

And every oblation of thy meat offering shalt thou season with salt; neither shalt thou suffer the salt of the covenant of thy God to be lacking from thy meat offering: with all thine offerings thou shalt offer salt.

Bible References

With salt

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.