"You are the salt of the earth; but if the salt has become tasteless, how will it be made salty again? It is good for nothing any more, except to be thrown out and trampled under foot by men," (Matthew 5:13).
* Three physical properties of salt have spiritual application for believers: (a) salt preserves -- as the salt of the earth, we are to deter the putrifying effects of sin in our society; (b) salt penetrates -- we are to initiate righteousness, to actively right wrongs as we encounter them; (c) salt creates thirst -- our lives should demand an explanation, as a cynical world observes unexpected priorities and attitudes.
* The primary warning of this verse is to stay usable. Our influence and impact in this world will only be as potent as the personal purity of our lives. We will not penetrate, preserve, or create thirst for Christ unless we pay the price of consistent obedience.
* The two main areas the Lord Jesus is addressing are those of involvement and influence. As the salt of the earth, we are to get involved in improving our world as much as possible, actively initiating righteousness. Our influence, both in speech, deeds, and attitudes should consistently point others to the Savior.
Otherwise, we are unusable, disqualified for service.