Salt of the Earth and Light of the World: Don't Stay a Spectator

Introduction

In late 1938, a young London stockbroker is about to leave for a ski trip when a friend urges him to come and see with his own eyes what is happening in Prague. He cancels everything. Once there, he discovers thousands of families fleeing the advance of the Nazis and, among them, a crowd of children that no one knows what to do with. His name is Nicholas Winton. Back in London, in the evenings after work, he organizes the impossible: finding a host family for every child and raising a guarantee of 50 pounds each. From spring to summer 1939, train after train, 669 children, most of them Jewish, reach Great Britain.

Then war breaks out, and one last group will not be able to leave. Winton puts away his files and says nothing. He tells no one, not even his wife. In his eyes, he had simply done what needed to be done.

This story opens a message from the Église du Tabernacle, in the series “At the School of the King” on the Sermon on the Mount. After the Beatitudes, the preacher pauses on Matthew 5:13-16, which he reads in the Semeur version. His outline has three parts: what it means to be the salt of the earth, what it means to be the light of the world, and the call to shine for the glory of the Father.

Message Outline

1. An Identity Already Given

• In his commentary on the Sermon on the Mount, John Stott observes that the two images Jesus uses are built on the same pattern: first a statement, “you are,” then a condition on which it depends.
• Jesus does not say “become salt,” or “make an effort to be salt someday.” He says: “You are the salt of the earth.” It is already true.
• “It is not a reward to be earned. It is a gift he places on us.” At the same time, it is up to us to go on being it every day and not to let that flavor fade away.
• It is a responsibility entrusted to us, and we cannot run from it.

2. The Salt That Preserves

• Today, salt costs almost nothing. But before refrigeration, it was the main way to preserve food and keep meat or fish from rotting. An ordinary product for us, very precious in those days.
• Nicholas Winton acted like salt: he did not stay passive, he did not hide, he reacted without delay to preserve lives threatened by the war.
• We are called to be a preserving presence in the face of an even deeper threat, sin. The world is not just a little bland: “left to itself, it does not stagnate, it decays.” This is Paul’s observation in Romans 1.
• The world does not find within itself the remedy for its sickness. God places his children in the heart of society to slow the decay and spread the flavor of Jesus there.
• London, 1813: Elizabeth Fry, a young Christian woman, enters Newgate prison. She finds nearly 300 women crammed together, children born there, filth, hunger, violence. She was told, “Don’t go in, those women are dangerous.” She returns, opens a school for the children, gives the inmates work, reads the Bible with them. Her work will eventually transform the prisons of an entire country.
• Salt does not make corruption disappear with a snap of the fingers. It keeps the rot from spreading where it is applied.
• In concrete terms: when your company asks you to overstate your skills to squeeze more money out of the client, when your friends or colleagues mock someone because of their difference, when you are offered a small dishonest arrangement “that everyone makes,” do you act like salt?
• Being salt is also a matter of speech. Salt adds flavor, but it can also sting a little. “Does salt that never bothers anyone still have any taste?” Where everyone stays silent in the face of injustice, dare to say, respectfully but clearly, that it is not right.

3. Keeping Your Flavor

• Pure salt is rather stable: in theory, it does not lose its flavor. But in Jesus’ day, it was mixed with other components. Sodium chloride, the truly salty part, was the most soluble in humidity. It disappeared first and left only a powder that still looked like salt, without having its taste or its properties.
• In the same way, although we are called to influence the world, it sometimes happens that the world influences us. At first, we do not notice. Little by little, we blend into the crowd and our taste is diluted.
• How can we give flavor when we no longer have any to offer? This flavor is not ours: it comes from Jesus, and we keep it only by staying attached to him.
• “Remain in me, and I in you [...] for apart from me you can do nothing” (John 15:4-5). “That is the whole secret. Stay connected to the source.”

4. A Light You Do Not Hide

• The disciple does not only preserve what is rotting: he is also called to light up what is in the shadows. Being the light of the world is part of the identity received in Jesus. We already are, but we must not hide this light.
• Being light means letting good works show, the visible expression of our faith: everything a Christian does and says because he believes, for the good of others and above all for the glory of God.
• Simple examples: going to see a friend going through a hard time and telling him you are praying for him; answering honestly, when someone asks what keeps you going, that it is your faith in Jesus; checking in on an isolated colleague; offering your time to someone who has nothing to give you in return; owning your identity as a Christian without looking down on others, without aggression, so that those around you know whom you belong to.
• The “grain measure” was the container used to measure wheat. You do not light a lamp to smother it under a pot. “We are not placed somewhere to hide there.”
• And yet we often hide: fear of isolation, fear of not being understood, shame. “Does a light that stays hidden when it is meant to give light still make sense?”
• The preacher quotes the German pastor and theologian Dietrich Bonhoeffer: “To flee into invisibility is to deny the calling received. A community of Jesus that wants to be invisible no longer follows him.”
• The goal is not to make us feel guilty, but to measure what is at stake. Two attitudes are open to us: remain passive, or take the urgency of our mission seriously, like Nicholas Winton or Elizabeth Fry, asking God to bring down the walls, visible or invisible, that keep us hidden.

5. The Mirror or the Mountain

• In Norway, the little town of Rjukan is enclosed at the bottom of a valley between very high mountains. Six months a year, the sun never comes down into it: it shines on the summits while the inhabitants live in the shadow. For a hundred years, they dreamed of a solution.
• In 2013, huge mirrors are installed at the top of the mountain. They follow the sun and send its rays back onto the square. A circle of light forms, and people come to sit in it in the middle of winter, their faces turned toward the brightness.
• The mirror is unable to produce light. It reflects a light that comes from elsewhere. Turned toward the sun, it lights up a whole town; turned away from the source, it becomes a cold, dark plate again.
• There is a second player in this story: the mountain. If Rjukan stayed in the shadow, it was not for lack of sun. It was that mass standing across the way that blocked the light.
• “In front of a heart in the shadows, we are never neutral.” Either we are the mirror turned toward Jesus, or the mountain, through our silence, our compromises, our laziness, our bad behavior. And the mountain decided nothing: you can stand in the way of the light without meaning to.
• Our light is a reflected light. God could have done without us, and yet the perfect God chose to use us despite our doubts, our fears and our sins.
• This frees us from the pressure of success. We are not bound to deliver results, as if it were up to us to convert the world by our own strength. It does not excuse us from acting, but it frees us from the fear of failing: “No one can come to me unless the Father who sent me draws him” (John 6:44).

6. Shining for the Glory of the Father

• Verse 16: the light must shine so that people see the good we do and give glory to the heavenly Father for it. The aim is not that people admire us or try to be like us, but that they turn to the source, Jesus.
• Hence the importance of regularly examining our motives. “The line is thin, often thinner than we think, between doing a good thing for the glory of God and doing it for a little of our own.” Jesus will say it a few verses later: “Be careful that you don’t do your charitable giving before men, to be seen by them” (Matthew 6:1).
• The question to keep asking: “When people see me, are they admiring me, or is God being glorified through my life?”
• This involves proclaiming the Gospel as we received it: the Father loved us despite our condition as sinners, and he sent his Son all the way to the cross for the forgiveness of our sins.
• The preacher adds a word on a related subject: a Christian sometimes depends more on a brother, a sister, a leader or a pastor than on Jesus himself. Community is willed by God, and isolating yourself in hardship is never the solution, because “a Christian alone becomes easier prey.” But nothing must take the place of Jesus.
• “I am not talking about an imperfect church. They all are. Ours like the others.” He is talking about a place where one man takes, in people’s hearts, the place that belongs to Jesus: “A church that does not send its members back to Jesus, but attaches them to a man, is a church to flee.”
• This applies to each of us: our way of approaching others often says more than our words. If we talk down to people, with an air of superiority, it is no longer Jesus we put forward, it is ourselves.
• In the 19th century, Hudson Taylor goes to China as a missionary. Most Western missionaries then live on the coast, in some comfort, with their clothes and their European-style churches, and this air of superiority builds a wall. Taylor goes deep into the interior, dresses and eats like the Chinese, shaves his head and wears the queue. His compatriots mock him, but he understood that it was not himself he had to show, but Jesus. The mission he founded became one of the largest in history.
• This is the attitude of Paul, who came to Corinth without impressive speeches, resolved to know nothing but Jesus Christ crucified, so that faith would rest on the power of God (1 Corinthians 2:1-5). “Making yourself small so that Jesus is great. That is the heart of verse 16.”

7. Persevering Even Without Seeing the Fruit

• The end of Nicholas Winton’s story: in 1988, his wife, tidying the attic, comes across an old album full of lists of names, photos of children and letters. She discovers what her husband had done fifty years earlier.
• Winton is invited onto the set of a BBC program. The host asks the audience: “Is there anyone here who owes their life to this man? Please stand.” One by one, then all together, nearly the whole room stands: children now grown up, with children and grandchildren of their own.
• Winton had the privilege of seeing the fruit of his action. We do not always see it. We spend time with someone, we pray, we make ourselves available, and we feel that nothing is happening.
• This work is not ours and the glory must not come back to us. Visible fruit sometimes takes time, and some of it may never be seen in our lifetime. “And yet nothing is lost, because it is not we who transform hearts, it is Jesus who transforms them by his Spirit.”
• We can ask God to work in us by his Spirit and meditate on his Word so as to act faithfully. And the mission is shared: together we form the body of Christ, surrounded by brothers and sisters with whom to share, seek advice and pray.
• One day, we will know “our 1988 broadcast,” only far more beautiful. It will not be a television studio that stands, but, in the presence of Jesus, a crowd of faces, lives touched by a gesture, a word or a prayer that we will have forgotten. We will stand with them, not to be applauded, but to give glory to the one who alone makes grow what we only sow.

Key Takeaways

• Being the salt of the earth and the light of the world is not a goal to reach: it is an identity received in Jesus, to be lived every day.
• Salt preserves: where God places you, your presence, your choices and your words slow the decay caused by sin.
• Your flavor does not come from you. You keep it only by staying attached to Jesus, the source.
• In front of a heart in the shadows, you are never neutral: you are the mirror that reflects the light of Jesus, or the mountain that blocks it.
• The goal is that God be glorified, not you. And even without seeing fruit, nothing is lost, because it is Jesus who transforms hearts.

Personal Application

1. In what concrete situation at work or among your friends are you called to act like salt this week, even if it means “stinging a little”?
2. In which areas have you gradually blended into the crowd? What would help you stay connected to the source?
3. What fear most often pushes you to hide your light: isolation, being misunderstood, shame?
4. When people see you act, is it you they admire, or God who is glorified? What do your motives reveal?
5. For whom are you praying without seeing fruit? How can you keep sowing without losing heart?

Verses Cited

• Matthew 5:13-16
• Romans 1:18-32
• John 15:4-5
• John 6:44
• Matthew 6:1
• 1 Corinthians 2:1-5
• 1 Corinthians 3:6-7

Frequently Asked Questions

What does Jesus mean by “You are the salt of the earth”?

Jesus does not say “become salt”: he affirms an identity already given. In those days, salt was used above all to preserve food. The disciple is called to be a presence that slows the world’s decay caused by sin, through his actions and his words, where God has placed him.

How can salt lose its flavor?

In Jesus’ day, salt was mixed with other components. The truly salty part dissolved first with humidity, leaving only a powder that looked like salt. In the same way, a Christian can let the world influence him and blend into the crowd. He keeps his flavor only by staying attached to Jesus.

Why should we shine for the Father’s glory and not our own?

Our light is a reflected light: it comes from Jesus. The goal is not that people admire us, but that they turn to him. The line is thin between doing good for the glory of God and doing it for a little of our own, hence the question to ask ourselves: when people see me, is it me they admire, or is God being glorified?