What good is salt if it no longer seasons anything? Jesus asked His disciples to consider that problem when He called them the salt of the earth. I understand His words as a calling to live faithfully among the people around us, with a warning that keeping a Christian name does not make a disobedient life useful to Him.
The People Jesus Called Salt
Matthew 5 begins with Jesus going up a mountain and sitting down to teach. His disciples came to Him, and the larger crowd also heard His teaching. We need to keep those disciples in view when we read the words about salt. He was addressing people who followed Him, and His words apply to the church because it consists of His disciples. He was not assigning this responsibility indiscriminately to every institution in society.
Before mentioning salt, Jesus described people who were poor in spirit and who mourned. He spoke of hungering for righteousness, showing mercy, and being pure in heart. He also blessed the peacemakers and those persecuted for righteousness. Their response to God would affect the way they lived with other people, even when those people opposed them. In that setting, He said:
You are the salt of the earth; but if the salt loses its flavor, how shall it be seasoned?
The character He had just described belongs with the responsibility He was giving them. I cannot use the title “salt of the earth” as permission to look down on everyone who does not believe. The people Jesus saves are sinners who needed mercy. I did not rescue myself or make myself worthy of His grace. If I become contemptuous of someone who needs that same mercy, I have forgotten how I came to belong to Christ.
Jesus went on to call His disciples the light of the world. He told them that others should see their good works and glorify their Father in heaven. Their conduct therefore had a purpose beyond gaining a good reputation. People were to see something in the lives of His followers that directed their attention to the Father.
Salt That Serves Its Purpose
Salt was familiar as a seasoning, and it was also used to slow the spoilage of food. Its usefulness was experienced when it was applied to what needed seasoning or preserving. I think that helps us understand why following Christ cannot mean withdrawing from every person who needs the truth. Our dealings with other people are where obedience becomes visible and where it can do them good.
There is also a wider biblical background to the image. Leviticus 2:13 required salt with Israel’s offerings, and Numbers 18:19 uses the expression “covenant of salt” for God’s lasting promise that Aaron and his priestly descendants would receive portions of Israel’s offerings. Those passages show that salt had associations beyond ordinary food. Yet Jesus did not explain every possible association in this part of the sermon. His immediate question concerns salt that no longer has the quality needed to season anything.
The Greek verb moraino can describe becoming foolish, while in this sentence it describes becoming tasteless. The question about seasoning tells us how it is being used. I do not need to make every possible meaning of the word part of the explanation when Jesus has already identified the problem He wants His hearers to consider.
One proposed explanation concerns salt gathered together with other material. If water dissolved and carried away the salt, a residue could remain that looked like the original mixture but could no longer season food. I treat that as a possible explanation of the illustration, because Jesus does not say what caused the loss. His warning concerns the result: what use is left when the salt no longer does what it is meant to do?
That question reaches ordinary choices in a believer’s life. Suppose an employer expects me to conceal a dishonest charge from a customer. Refusing may cost me the employer’s approval, but it can also expose a practice that harms people who trusted him. My obedience has a consequence for someone beyond myself. The customer may be protected from a wrong that would otherwise have remained hidden.
The same responsibility appears when a promise becomes expensive to keep. Keeping it shows that personal advantage is not my only concern. A married believer is to honor his vows instead of finding an excuse for an affair, and someone who speaks about compassion should be willing to help a person being mistreated. Such conduct can restrain wrongdoing and benefit our neighbors. It cannot, however, give those neighbors spiritual life. The good that Christian conduct can do must not be confused with the salvation only Christ provides.
When a Christian Name Hides Disobedience
A congregation can lose sight of that responsibility while continuing to look active. It may publish a sound statement of faith and then protect a leader who openly violates it. It may arrange enough events to fill a calendar while avoiding the gospel because someone might be offended. The building and familiar routines can remain even when the people have stopped listening to the Lord they profess to follow.
Jesus completed His warning by describing useless salt being thrown out and trampled underfoot. I understand that as a warning about failed usefulness and witness. I do not understand it to teach that someone who has genuinely been born again loses his salvation. The Holy Spirit seals believers for the day of redemption. Their security rests in God’s saving work, while their conduct can still damage the witness they are responsible to give.
If I lie to someone, I cannot simply appeal to eternal security and expect him to trust what I say about Jesus. The lie has harmed him and given him a reason to question my words. Sin also grieves the Holy Spirit and can bring the Father’s discipline. Assurance does not remove those consequences or make the sin harmless.
Nor should someone who persistently rejects Christ’s authority rest in the memory of once calling himself a Christian. Regeneration means that a person has truly been born again. That new life ought to become evident as he learns to obey the Lord. Works do not earn salvation, and a believer’s failure does not by itself establish that he was never saved. Yet an empty profession is no substitute for new life, and eternal security is no permission to disregard Christ.
I therefore need to ask more about a congregation than how large it is or how well people speak of it. When wrong is exposed, do its leaders tell the truth even if doing so will cost them influence? Are members learning to obey Christ, and is the church willing to repent instead of protecting its image? Patient care for a struggling believer may reveal faithfulness that receives little public attention. The reputation alone cannot answer those questions.
What Salt Has to Do with Our Speech
Much of the influence we have on other people takes place through conversation. Paul uses salt imagery when describing that part of Christian life, and he connects it with grace:
Let your speech always be with grace, seasoned with salt, that you may know how you ought to answer each one.
The verse asks me to consider both what I say and the person who needs an answer. It gives no permission to be crude or to humiliate someone with a clever insult. If I am more concerned with winning than with helping him understand, my pride is directing the conversation. Gracious speech still tells the truth, but it does so out of concern for the person who is hearing it.
To answer that person wisely, I first need to listen. Someone who is grieving may need comfort, while someone defending harmful conduct may need a direct warning. I cannot make that distinction responsibly if I have not understood what he is asking or what is happening. A prepared answer can contain truth and still fail to address the actual concern before me.
Proverbs 27:5 says that open rebuke is better than love carefully concealed. If a fellow believer is defending conduct that is hurting his family, keeping a necessary warning to myself does not help him. I need to speak plainly enough for him to understand the wrong, and patiently enough to help him face it. Enjoying his embarrassment would reveal a very different purpose from seeking his good.
The people closest to me should hear that concern in the way I speak to them. If I describe God’s grace and then regularly answer my family with contempt, they have reason to question my witness. Silence alone would not correct the attitude. I need the Lord to govern my mouth, and I also need courage when fear makes me reluctant to say something another person needs to hear.
Grace Teaches Us to Refuse Sin
Living faithfully among people will sometimes put us at odds with what they accept. That difference should come from obedience to Christ, rather than from a desire to feel superior. Paul describes the grace that saves us as also teaching us how to live:
For the grace of God that brings salvation has appeared to all men, teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly in the present age.
Christ gave Himself for us, and the Spirit works within us as we learn to obey Him. The life Paul describes depends on grace from the beginning. When I fail, I need to repent and receive correction. Remembering that dependence should also shape my response when another believer falls. I can name his sin honestly while seeking his restoration and admitting that I am capable of sin too.
A church that acknowledges a failure and seeks forgiveness is responding differently from a church that begins defending the wrong. Compromise takes hold when sin is excused, made light of, or protected from correction. If leaders pronounce a blessing on conduct Scripture condemns, they are teaching people to accept what they should turn from. Those people cannot be helped by assurances that contradict God’s Word.
Fear of being disliked can produce the same failure more quietly. A congregation may speak often about kindness and community service while avoiding sin, judgment, and repentance. If Christ’s shed blood and resurrection are also left unexplained, the gospel itself has gone unspoken. The subjects that might provoke disapproval are the very subjects people need to understand if they are to know why they need the Savior.
Keeping familiar religious language does not prevent this. A church can continue using Christian words while accepting the values of people who reject God’s authority. James confronts that divided allegiance:
Adulterers and adulteresses! Do you not know that friendship with the world is enmity with God?
He is not forbidding kindness toward an unbelieving neighbor. We should listen patiently, help when the neighbor suffers, and care about him sincerely. The problem is joining the rebellion against God in order to gain acceptance. If a church trades away truth for approval, it may become useful to the purposes of people whose respect it wanted while ceasing to give the witness Christ entrusted to it.
Christians can vote, serve in public office, and work for just laws that protect their neighbors. Those can be worthwhile responsibilities. They do not require the church to control society by force, and even a good law cannot make the person it restrains spiritually alive. I do not want outward reform to occupy us so completely that we stop calling people to repentance and faith.
Serving People and Telling Them About Christ
The same distinction helps us understand practical service. If a neighbor is hungry, a meal meets a real need. If someone is ill and cannot obtain care, helping him get that care is an act of compassion. We should want to help because the person matters, without treating him as a project. Yet neither the meal nor the medical help can reconcile him to God. He also needs to know who Jesus is and what Jesus has done for him.
Peter, one of Jesus’ apostles, made that clear after he and John met a man who had been unable to walk from birth. Peter told him to rise and walk in Jesus’ name, and the man was healed. When the religious rulers questioned the apostles about what had happened, Peter answered them. He identified Jesus Christ as the One they had crucified and whom God had raised from the dead. The healing had brought Peter before them, but his answer went beyond the man’s physical condition. He told them where salvation is found:
Nor is there salvation in any other, for there is no other name under heaven given among men by which we must be saved.
If there is salvation in no other name, I cannot faithfully present Jesus as one helpful spiritual option among many. Nor would it be kind to withhold His name while hoping my good conduct explains everything a person needs to know. Conduct can support what I say, but the neighbor still needs to hear that Christ died for his sins and rose bodily from the dead. He needs to understand the call to repent and believe in Him.
That message also places a responsibility on our relationships within the church. A person who hears us speak about forgiveness may then see Christians refusing to forgive one another. Someone who is considering what we teach may discover that we will not even listen to each other. Those contradictions do not make the gospel false, but they can make it harder for a person to hear it from us. Jesus gave His disciples a different way to be recognized:
By this all will know that you are My disciples, if you have love for one another.
Love for a fellow believer includes wanting him to be restored when he has sinned. That desire should affect how I approach him. If I am impatient with every weakness or delighted when I can prove him wrong, I am making his correction serve my pride. I should listen carefully enough to understand what he actually believes and then examine it by Scripture. The purpose is to help him obey Christ, and I need to be willing to receive the same help when I am wrong.
Paul’s instruction in 2 Timothy 4:2 gives ministers that responsibility even when their hearers would prefer another message. They are to preach the Word, convincing, rebuking, and exhorting with patience and teaching. The patience belongs with the correction. Identifying a real sin does not give a minister permission to be cruel, and fearing a difficult response does not give him permission to leave the sin unaddressed.
These responsibilities extend into the life we share as members of Christ’s body. If we preach forgiveness while nursing resentment, we need to address that resentment. If we call our silence unity while allowing false teaching to go unchallenged, we have left people without the correction they need. Love requires us to care about both the truth and the people affected by it. That becomes especially clear when a disagreement makes obedience uncomfortable.
The New Life Behind a Faithful Witness
All of these failures bring us back to the problem beneath the conduct. Romans 5:12 explains that sin entered the world through one man and death through sin. That man was Adam, who disobeyed God by eating the fruit he had been forbidden to eat. Education can help someone understand the consequences of a choice, medicine can treat an illness, and a just law can restrain wrongdoing. Those benefits are real, but none of them removes sin or gives a person new life before God.
Nicodemus was a religious leader when he came to Jesus. His position and knowledge did not remove his need for what Jesus told him:
Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God.
Being born again is where life as Christ’s disciple begins. When a sinner repents and believes in Him, God forgives him and makes him a new creation. The Holy Spirit comes to live within him and seals him for the day of redemption. Every genuine believer is eternally secure in God’s saving work. He learns to obey because he has received new life, rather than trying to make himself respectable enough to earn it.
To understand that gift, we have to understand what Christ did for us. The eternal Son became truly human without ceasing to be God. He lived without sin and willingly gave Himself to be slain as the perfect sacrifice. Wicked men tortured Him and put Him to death, but their cruelty was not what gave His offering its saving worth. He was the perfect Savior offering His own blood and life for sinners.
His offering was complete when He shed His blood and died, before His burial and bodily resurrection. The Father did not punish, curse, abandon, strike, bruise, or pour wrath on Jesus. The Father and the Son were united in this saving work. Jesus was buried, and He rose bodily from the dead. The One who gave Himself for us is alive.
He gave Himself for the whole world, so the offer we bring to an unbelieving neighbor is genuine. That person can resist and reject it, but everyone who repents and believes in Christ receives forgiveness and everlasting life. I want the person to understand that he is being called to trust the Savior. Asking him merely to improve his behavior would leave him trying to repair outward conduct without receiving the reconciliation he needs.
Once that distinction is clear, good works take their proper place. They express the grace we have received, and they show compassion toward people Christ commands us to love. They cannot take the place of the gospel. At the same time, knowing how to explain the gospel does not excuse me from helping someone who is suffering. I may need to provide immediate help and also speak about Christ, because the same person can need both.
My Final Thoughts
Jesus called His disciples the salt of the earth after describing the character of people who belonged to Him. His warning about useless salt therefore reaches the way we live among others. A Christian name and a full church calendar cannot make disobedience useful. The witness He calls us to give takes shape when we obey Him, speak truth with grace, and help people whose needs have come before us. Those good works are meant to direct attention to our Father in heaven.
Our neighbors still need the new birth through faith in Christ, and no amount of moral improvement can provide it. That is why I want my conduct to agree with the message I bring them. If I have been dishonest, I need to tell the truth and put right what I can. If contempt has entered my speech, I need to repent instead of defending it as boldness. Christ has given me a message that another person needs to hear, and I do not want my own disobedience to stand in the way of that witness.