Mark 9:49-50

For it is by fire that every one will be salted.

Colossians 4:6

Let your conversation always be kindly, and seasoned, as it were, with salt; that you may know in each case what answer you ought to give.

Matthew 5:13

It is you who are the Salt of the earth; but, if the salt should lose its strength, what will you use to restore its saltiness? It is no longer good for anything, but is thrown away, and trampled underfoot.

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
It is you who are the Salt of the earth; but, if the salt should lose its strength, what will you use to restore its saltiness? It is no longer good for anything, but is thrown away, and trampled underfoot.
Mark 9:49
For it is by fire that every one will be salted.
Colossians 4:6
Let your conversation always be kindly, and seasoned, as it were, with salt; that you may know in each case what answer you ought to give.