Matthew 5:13
"You are the salt of the earth. But if salt loses its strength, what can make it salt again? It is good for nothing but to be thrown away and trodden under foot.
Luke 14:34-35
Salt is good, but if salt itself loses its strength, how can that strength be restored?
Colossians 4:6
Always let your conversation be seasoned with salt, that is, with winsomeness, so that you may know how to make a fitting answer to everyone.
Mark 9:49-50
Everyone must be seasoned with fire. Salt is a good thing, but if salt loses its strength, how can you season it again?
Hebrews 6:4-6
For it is impossible for those who have once for all been enlightened and have experienced the gift from heaven, who have been made sharers of the Holy Spirit
2 Peter 2:20-21
For if, after men have escaped the corrupting ways of the world through a full knowledge of the Lord and Saviour Jesus Christ, they again become entangled in them and are conquered by them, then their last condition is worse than their former one.