The very essence of salt is its saltiness. And the very purpose of salt is to be salty. Saltiness is the defining characteristic of this mineral. In a similar way, in Matthew 5:13, Jesus calls His followers to be the salt of the earth. And, the defining characteristic of believers is to reflect the character of Jesus Christ.
In Mark 9:50, Jesus made the point that, if believers ever lose their Christlike characteristics, how hard it would be to ever gain it back again. With this is mind, as you read the words of Jesus below, look to Jesus and reflect His aroma and flavor as you serve Him and others in this world.
(Mark 9:50) “Salt is good, but if it loses its saltiness, how can you make it salty again? Have salt among yourselves, and be at peace with each other.”