Disciples are salt and must not lose their distinctive usefulness.

¹³Ye are the salt of the earth: but if the salt have lost his 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.

⁵⁰Salt is good: but if the salt have lost his saltness, wherewith will ye season it? Have salt in yourselves, and have peace one with another.

³⁴Salt is good: but if the salt have lost his savour, wherewith shall it be seasoned?

³⁵It is neither fit for the land, nor yet for the dunghill; but men cast it out. He that hath ears to hear, let him hear.