Matthew 5:13

Ye, are the salt of the earth; but, if the salt become tasteless, wherewith shall it be salted? it is good, for nothing, any more, save, being cast out, to be trampled on by men.

Leviticus 2:13

And, every meal-offering oblation of thine, with salt, shalt thou season, and thou shelf not suffer to be lacking the salt of the covenant of thy God, from upon thy meal-offering, - upon every oblation of thine, shalt thou offer salt.

Luke 14:34-35

Good, therefore is the salt; but, if, even the salt, become tasteless, wherewith shall it be seasoned?

Colossians 4:6

Your discourse being always with benefit, with salt, seasoned, - that ye may know how it behoveth you, unto each one, to be making answer.

Mark 9:49-50

For, everyone, with fire, shall be salted.

Hebrews 6:4-6

For it is impossible - as to these who have been, once for all, illuminated, who have tasted also of the heavenly free-gift, and have been made, partners, in a Holy Spirit,

2 Peter 2:20-21

For, if, having escaped from the defilements of the world by a personal knowledge of the Lord and Saviour Jesus Christ, but, by the same having again become entangled, they are defeated, the, last, state hath become, for them, worse than, the first;

Treasury of Scripture Knowledge

Summary

Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.

General references

Bible References

The salt

Leviticus 2:13
And, every meal-offering oblation of thine, with salt, shalt thou season, and thou shelf not suffer to be lacking the salt of the covenant of thy God, from upon thy meal-offering, - upon every oblation of thine, shalt thou offer salt.
Colossians 4:6
Your discourse being always with benefit, with salt, seasoned, - that ye may know how it behoveth you, unto each one, to be making answer.

If

Mark 9:49
For, everyone, with fire, shall be salted.
Luke 14:34
Good, therefore is the salt; but, if, even the salt, become tasteless, wherewith shall it be seasoned?
Hebrews 6:4
For it is impossible - as to these who have been, once for all, illuminated, who have tasted also of the heavenly free-gift, and have been made, partners, in a Holy Spirit,
2 Peter 2:20
For, if, having escaped from the defilements of the world by a personal knowledge of the Lord and Saviour Jesus Christ, but, by the same having again become entangled, they are defeated, the, last, state hath become, for them, worse than, the first;

General references

Ezekiel 15:3
Shall there be taken from it wood, to be made into any work? Or will men take therefrom a peg, to hang thereon any vessel?