Matthew 5:13
You are the salt of the earth; but if the salt has lost its strength, with what shall it be seasoned? It is good for nothing more, except being cast out to be trodden upon by men.
Luke 14:34-35
Salt, therefore, is good; but if the salt has lost its strength, with what shall it be seasoned?
Colossians 4:6
Let your words always be with kindness, seasoned with salt, that you may know how to answer every one.
Mark 9:49-50
For every man shall be salted with fire, and every sacrifice shall be salted with salt.
Hebrews 6:4-6
For those once enlightened and having tasted of the heavenly gift and been made partakers of the Holy Spirit,
2 Peter 2:20-21
For if having escaped the defilements of the world by a knowledge of the Lord and Saviour Jesus Christ, they are again entangled and overcome by them, the last state of those persons is worse than the first.