Mark 9:49-50

For by fire every one will be salted;

Colossians 4:6

Let your speech be always gracious, with a savor of salt, and learn how to give every man a fitting answer.

Matthew 5:13

"You are the salt of the earth; but if the salt lose its savor, in what way shall it be salted? It is henceforth good for nothing but to be thrown out and trodden under foot of 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 lose its savor, in what way shall it be salted? It is henceforth good for nothing but to be thrown out and trodden under foot of men.
Mark 9:49
For by fire every one will be salted;
Colossians 4:6
Let your speech be always gracious, with a savor of salt, and learn how to give every man a fitting answer.