Mark 9:49-50

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

Colossians 4:6

Let your speech be always with grace, seasoned with salt, that you may know how you ought to answer every one.

Matthew 5:13

You are the salt of the earth: but if the salt has become tasteless, by what means shall it become salt again? It is then good for nothing but to be thrown out and trod upon by men.

Treasury of Scripture Knowledge

Summary

And thou shalt offer them before the LORD, and the priests shall cast salt upon them, and they shall offer them up for a burnt offering unto the LORD.

Bible References

Cast salt

Matthew 5:13
You are the salt of the earth: but if the salt has become tasteless, by what means shall it become salt again? It is then good for nothing but to be thrown out and trod upon by men.
Mark 9:49
For every one shall be salted with fire, and every sacrifice shall be seasoned with salt.
Colossians 4:6
Let your speech be always with grace, seasoned with salt, that you may know how you ought to answer every one.