Whoever receives God's life and grasps the nature of his future has taken on the character of salt. What is important to God is genuineness. He does not expect anyone to adopt an attitude that is not in accord with his inner self and feelings. Christ sees in his friends those who have his spirit, who breathe his life. The powers of the future world are at work in them, revealing unconditional love, righteousness, and purity.
Salt can delay death.
We know that doctors postpone death and revive or maintain the regenerative power of an organ by injecting salt. The world must perish in order to be born again. As long as salt remains salt, it restrains the fulfillment of evil in the world and acts as the power that will one day renew the earth. It is fit for nothing but to be trodden underfoot. Salt by its nature is entirely different from the food it makes palatable.