Matthew 5:13
Ye are the salt of the earth: but if the salt have lost its savour, wherewith shall it be salted? It is thenceforth good for nothing, but to be cast out and to be trodden under foot of men.
Luke 14:34-35
Salt is good: but if the salt have lost its savour, wherewith shall it be seasoned?
Colossians 4:6
Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer every one.
Mark 9:49-50
For every one shall be salted with fire, and every sacrifice shall be salted with salt.
Hebrews 6:4-6
For it is impossible for those who were once inlightened, and have tasted the heavenly gift, and been made partakers of the Holy Ghost,
2 Peter 2:20-21
For if after they have escaped the pollutions of the world, thro the knowledge of the Lord and Saviour Jesus Christ, they are again intangled therein and overcome, their last state is worse then the first.