Matthew 5:13
"You are the salt of the earth. But if salt loses its flavor, how can it be made salty again? It is no longer good for anything except to be thrown out and trampled on by people.
Leviticus 2:13
Moreover, you must season every one of your grain offerings with salt; you must not allow the salt of the covenant of your God to be missing from your grain offering -- on every one of your grain offerings you must present salt.
Luke 14:34-35
"Salt is good, but if salt loses its flavor, how can its flavor be restored?
Colossians 4:6
Let your speech always be gracious, seasoned with salt, so that you may know how you should answer everyone.
Mark 9:49-50
Everyone will be salted with fire.
Hebrews 6:4-6
For it is impossible in the case of those who have once been enlightened, tasted the heavenly gift, become partakers of the Holy Spirit,
2 Peter 2:20-21
For if after they have escaped the filthy things of the world through the rich knowledge of our Lord and Savior Jesus Christ, they again get entangled in them and succumb to them, their last state has become worse for them than their first.