Luke 14:34

Salt good: but if salt be rendered insipid, with what shall it be fitted?

Matthew 5:13

Ye are the salt of the earth: and if the salt be rendered insipid, with what shall it be salted? it is yet strong for nothing, except to be cast without, and to be trodden under foot of men.

Mark 9:49-50

For all shall be salted with fire, and every sacrifice shall be salted with salt.

Colossians 4:6

Your word always in grace, Seasoned with salt, to know how it is fitting for you to answer one another.

Hebrews 2:4-8

God confirming the testimony, together with signs and wonders, and various powers, and partitions of the Holy Spirit, according to his will

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

But

Matthew 5:13
Ye are the salt of the earth: and if the salt be rendered insipid, with what shall it be salted? it is yet strong for nothing, except to be cast without, and to be trodden under foot of men.
Mark 9:49
For all shall be salted with fire, and every sacrifice shall be salted with salt.
Colossians 4:6
Your word always in grace, Seasoned with salt, to know how it is fitting for you to answer one another.
Hebrews 2:4
God confirming the testimony, together with signs and wonders, and various powers, and partitions of the Holy Spirit, according to his will

General references

Ezekiel 15:3
Shall wood be taken from it to do for work? or will they take from it a peg to hang upon it any vessel?