Luke 14:34
Salt is good; but if the salt become taste less, by what means shall it become salt again?
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 9:49-50
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.
Hebrews 2:4-8
God also bearing testimony with them by signs and wonders, and by various mighty deeds, and by distributions of the Holy Spirit, according to his own will.