Salt and Light

Life in the Kingdom  •  Sermon  •  Submitted   •  Presented
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We Are Called for So Much More

Opening

Picture this scenario: You wake up tomorrow morning and turn on the local news. The anchor, looking puzzled, reports something unprecedented. "In an unexplained phenomenon," she says, "every Christian in our community has mysteriously disappeared overnight."
What would happen next? Would the food banks suddenly find themselves without volunteers? Would local businesses notice a drop in their most trustworthy employees? Would schools wonder where their most reliable volunteers went? Would neighborhoods feel less safe without those families who actually cared about their neighbors? Would the homeless shelter wonder who's going to serve meals this week?
Or would life just continue as normal, with hardly anyone noticing the difference?
Rick Rusaw wrote a book titled The Externally Focused Church, and in it he asked these piercing questions that should make every believer pause: "If Your Church Vanished, Would Your Community Weep? Would Anyone Notice? Would Anyone Care?"
These questions hit particularly hard in our current cultural moment. We're living in times marked by unprecedented division, rising anxiety, and what often feels like growing moral darkness. Social media amplifies our worst impulses. Political polarization has torn apart families. Many people report feeling more isolated and hopeless than ever before.
Into this darkness, Jesus gives us a radically different vision of what we're called to be. Not passive observers waiting for heaven, but active agents of transformation right here, right now. Let's examine His words in Matthew 5:13-16, part of what we call the Sermon on the Mount—arguably the most comprehensive teaching on Christian living ever given.

Scripture Reading

Matthew 5:13–16 (NKJV)
"You are the salt of the earth; but if the salt loses its flavor, how shall it be seasoned? It is then good for nothing but to be thrown out and trampled underfoot by men.
"You are the light of the world. A city that is set on a hill cannot be hidden. Nor do they light a lamp and put it under a basket, but on a lampstand, and it gives light to all who are in the house. Let your light so shine before men, that they may see your good works and glorify your Father in heaven.

The Context That Changes Everything

Before we dive deep into these metaphors, we need to understand where Jesus was when He spoke these words. He was sitting on a mountainside, surrounded by ordinary people—fishermen, tax collectors, farmers, tradespeople. These weren't the religious elite or the politically powerful. They were regular folks trying to make it through life in an occupied country under Roman rule.
And to these ordinary people, Jesus makes an extraordinary declaration. He doesn't say, "You should try to be salt and light." He doesn't say, "You might become salt and light someday." He says with absolute certainty: "You are the salt of the earth. You are the light of the world."
This is identity before activity. This is who you are before it's what you do.

We Are the Ones Called to Change the World

Notice that first crucial word: "You." In our culture today, we have a tendency to look everywhere else for world-changers. We expect politicians to transform society with the right legislation. We wait for celebrities to influence culture with their platforms. We assume the wealthy will solve our problems with their resources. We hope someone, somewhere, will step up and make things better.
But Jesus looks at a crowd of ordinary believers—people just like you and me—and declares: "You are the ones. You are my strategy for changing the world."
We often hear about the separation of church and state in America, and sometimes Christians use this as an excuse to withdraw from public engagement. But did you know those exact words "separation of church and state" appear nowhere in our Constitution? What the First Amendment actually says is: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof."
This means we have both freedom from government establishing religion AND freedom to exercise our faith publicly. We're not meant to hide in our churches. We're called to engage the world, to change it, to be difference-makers in every sphere of society.
The early Christians understood this. They didn't wait for the Roman Empire to become friendly to Christianity before they started changing the world. They transformed their communities through acts of love, service, and sacrifice that were so compelling that even their enemies had to admit: "These Christians really do love each other."
We shouldn't depend on political parties for our ultimate hope or source of power. Our citizenship is in heaven, but our mission field is earth. We proclaim truth as representatives of the one true God, serving whichever political leaders are in office while never compromising our ultimate allegiance to Christ.

You Are the Salt of the Earth

Understanding Salt in Jesus' World

To understand the power of Jesus' metaphor, we need to understand just how valuable salt was in the ancient world. Salt was so precious that Roman soldiers were sometimes paid in salt rations—that's where we get the word "salary." There were salt routes across continents, salt wars between nations, and salt taxes that funded empires.
When Jesus calls you salt, He's not comparing you to something common or cheap. He's saying you're precious, essential, and valuable beyond measure.
But salt's value wasn't just economic—it was practical and necessary for survival.

What Salt Does: Season, Preserve, and Create Thirst

First, salt seasons. It makes food taste better, brings out flavors that were hidden, transforms the ordinary into something memorable. As Christians, this raises a crucial question: Do we make life around us more flavorful? When people encounter us, do they find their day somehow more meaningful, their burdens somehow lighter, their outlook somehow brighter?
Think about the people you work with. Are you known as someone who brings positivity to tense situations? Do you season conversations with humor, kindness, and hope? Or are you just another complainer, another person adding to the negativity and stress?
Second, salt preserves. Before refrigeration, salt was the primary way to prevent decay and corruption in food. This was literally a matter of life and death. Without salt, food would rot, families would starve, and societies would collapse.
In our morally decaying culture, we're called to be a preserving influence. We're living in times when truth itself seems under attack, when basic concepts like honesty, integrity, and faithfulness are considered outdated. Into this environment, Christ calls us to be moral preservatives.
What corruption in your workplace needs your preserving presence? Maybe it's the culture of cutting corners, taking credit for others' work, or treating customers dishonestly. What decay in your neighborhood needs your salt? Maybe it's the gossip networks, the apathy toward struggling families, or the acceptance of mediocrity in schools.
What deterioration in your family relationships needs your preserving influence? Maybe it's the drift toward superficial conversations, the habit of criticism instead of encouragement, or the slow erosion of family traditions that once held you together.
Third, salt creates thirst. This might be the most overlooked function of salt, but it's crucial. When you eat something salty, you naturally want something to drink. When people encounter you as a believer, do they become thirsty for more of what you have? Do they become curious about your peace in the middle of chaos? Do they wonder about your hope when everything seems hopeless? Do they question the source of your joy when they're struggling with depression?

Biblical Examples of Salt's Significance

The Bible teaches us about salt in multiple contexts, each revealing different aspects of how we're supposed to function in the world:
Genesis 19:26 tells us about Lot's wife, who became a pillar of salt when she disobeyed God's command not to look back at the destruction of Sodom and Gomorrah. This gives us a permanent, crystalline warning about the dangers of disobedience and nostalgia for sin. Sometimes our role as salt is to serve as a living reminder of consequences.
Leviticus 2:13 commanded that every grain offering be seasoned with salt: "And every offering of your grain offering you shall season with salt; you shall not allow the salt of the covenant of your God to be lacking from your grain offering. With all your offerings you shall offer salt." Salt was so integral to worship that God required it in every sacrifice. This suggests that our "saltiness" as believers should be present in everything we offer to God—our work, our relationships, our service.
Ezekiel 16:4 mentions the ancient practice of rubbing newborns with salt for preservation and health: "As for your nativity, on the day you were born your navel cord was not cut, nor were you washed in water to cleanse you; you were not rubbed with salt nor wrapped in swaddling cloths." Some cultures still practice variations of this today, scrubbing babies with salt on the 3rd, 4th, 7th, 20th, and 40th days after birth, believing it invokes God's protection and has medicinal benefits. Even today, we use Epsom salts for healing and recovery. This suggests our saltiness should have a healing, protective effect on the vulnerable around us.
Colossians 4:6 gives us practical instruction: "Let your speech always be with grace, seasoned with salt, that you may know how you ought to answer each one." Our words should be seasoned with salt—knowing when to speak with courage and when to remain silent with wisdom, when to challenge and when to comfort, when to confront sin and when to offer grace.

The Danger of Losing Our Saltiness

Here's something interesting: I've never personally seen salt lose its flavor just sitting on a shelf. Pure sodium chloride doesn't spontaneously become flavorless. But I have seen salt become useless.
How does this happen? Salt can be so diluted by other impurities or materials that the salt content becomes insufficient to accomplish its purpose. It looks like salt, it might even be mostly salt, but it can't season food, preserve meat, or create thirst anymore. It becomes "good for nothing but to be thrown out and trampled underfoot."
This is a sobering warning for believers. What dilutes our spiritual saltiness?
In our digital age, what's compromising your effectiveness as salt? Is it the constant noise of social media that drowns out the still, small voice of God? Is it the pressure to fit in with cultural trends that directly contradict biblical values? Is it the temptation to stay silent when you should speak truth because you're afraid of being labeled or cancelled?
Are you being diluted by the pursuit of comfort over calling? By the desire for popularity over prophetic witness? By the fear of man over the fear of God?
Maybe it's more subtle. Maybe it's the slow drift that happens when we stop spending consistent time in prayer and Scripture. Maybe it's the gradual compromise that occurs when we repeatedly choose what's easy over what's right. Maybe it's the accumulation of small compromises that, over time, render us ineffective.
The bottom line is this: If we are to be salt of the earth, then the earth should be a better place because we are here.

You Are the Light of the World

Jesus: The Ultimate Light Source

Before we explore our calling to be light, we must understand that Jesus Himself is THE light. This isn't just metaphorical language—it's a claim to deity that would have shocked His Jewish audience.
Isaiah 9:2 prophesied: "The people who walked in darkness have seen a great light; those who dwelt in the land of the shadow of death, upon them a light has shined." This prophecy found its fulfillment in the very next verses: Isaiah 9:6 - "For unto us a Child is born, unto us a Son is given; and the government will be upon His shoulder. And His name will be called Wonderful, Counselor, Mighty God, Everlasting Father, Prince of Peace."
Jesus explicitly claimed this identity multiple times:
John 8:12 - "Then Jesus spoke to them again, saying, 'I am the light of the world. He who follows Me shall not walk in darkness, but have the light of life.'"
John 9:5 - "As long as I am in the world, I am the light of the world."
John 12:35 - "Then Jesus said to them, 'A little while longer the light is with you. Walk while you have the light, lest darkness overtake you; he who walks in darkness does not know where he is going.'"
So when Jesus says "I am the light of the world," He's declaring Himself to be the power station—the source of all spiritual illumination, truth, and life. When He says "You are the light of the world," He means you are the outlets, the distribution points that carry His power into individual neighborhoods, businesses, homes, and hearts.
This is crucial to understand: we don't generate our own light. We reflect and distribute the light of Christ. The moon doesn't create its own light, but it reflects the sun's light into the darkness of night. Similarly, we reflect the light of the Son into the darkness of our world.

Individual Lights and Corporate Illumination

Notice that Jesus uses two different metaphors for how light functions: a city on a hill and a lamp in a house.
The city on a hill represents our corporate witness—when we come together as the body of Christ, we create a beacon visible from great distances. This is why corporate worship, fellowship, and service matter so much. A single candle can light up a corner of a room, but a hundred candles burning together can illuminate an entire mountainside.
This challenges the modern tendency toward individualistic Christianity. Some people say, "I don't need the church; I can worship God on my own." While personal relationship with God is essential, Jesus clearly envisions His followers functioning together as a city. Cities provide resources that individual homes cannot—hospitals, schools, libraries, fire departments, power grids, water systems. Similarly, the church provides corporate resources for spiritual growth, accountability, service, and witness that isolated believers cannot provide for themselves.
But Jesus also talks about a lamp in a house—individual lights shining in specific, focused ways. Sometimes you need the bright floodlight of the entire church community responding to a disaster or social need. But sometimes you need just your personal light shining faithfully in your particular corner of the world—your workplace, your family, your neighborhood.
The beauty is that both metaphors work together. Strong individual lights make stronger corporate witness, and strong corporate witness empowers and encourages individual lights.

The Purpose of Light: Revealing and Guiding

Light serves two primary functions: it reveals what's hidden, and it guides people to safety.
Light reveals truth. When you turn on a light in a dark room, you immediately see things that were hidden—both good and bad. You might discover beautiful artwork on the walls, or you might expose dirt that needs to be cleaned. Similarly, when Christians shine the light of Christ into situations, we reveal both beauty and ugliness, both truth and deception.
This is why the world sometimes reacts negatively to genuine Christian witness. Light exposes things people would rather keep hidden. It reveals hypocrisy, injustice, and sin. But it also reveals beauty, potential, and hope that people didn't know was there.
Light guides people to safety. Before GPS and electric street lights, travelers depended on landmarks like cities on hills to guide them to safety. Lighthouse keepers saved countless lives by faithfully maintaining lights that warned ships away from dangerous rocks and guided them to safe harbors.
In our confused and morally dark culture, people are desperately looking for guidance. They need to see examples of marriages that work, families that stick together, businesses that operate with integrity, and individuals who demonstrate genuine peace and joy in the midst of life's storms.

Don't Hide Your Light

Jesus warns against putting our light "under a basket." In ancient homes, clay lamps were placed on lampstands to maximize their illumination. Covering a lamp with a basket would not only hide the light—it would eventually extinguish the flame due to lack of oxygen.
What are the modern "baskets" that hide our light?
The basket of fear: We're afraid of being different, afraid of standing out, afraid of being criticized or rejected. So we hide our faith, keep our beliefs private, and blend in with the crowd.
The basket of busyness: We're so occupied with good activities that we neglect the great commission. We're too busy with work, sports, entertainment, and even church activities to actually shine light into dark places.
The basket of comfort: We're comfortable in our Christian bubble, surrounded by people who think like us, believe like us, and act like us. We rarely venture into places where our light is actually needed.
The basket of digital distraction: In our social media age, we can appear to be shining light by sharing inspirational memes or Christian quotes, while never actually engaging with real people in real darkness.
The basket of political identity: Sometimes Christians hide their light under partisan political positions, causing people to see our politics instead of our Savior. Our light gets confused with our political preferences, and the message of Christ gets lost in the noise of cultural warfare.

Contemporary Applications: Salt and Light in Modern Life

In a Politically Divided World

How do we function as salt and light in today's hyperpartisan political climate? This is one of the most challenging aspects of Christian witness in our current cultural moment.
As salt in political discourse:
We season conversations with grace rather than adding to the toxicity
We preserve civility when others are descending into personal attacks
We create thirst for something better than endless conflict and hatred
We refuse to let political identity trump our Christian identity
As light in political engagement:
We illuminate issues with biblical wisdom rather than merely parroting party talking points
We show a better way than shouting matches and social media wars
We let our good works speak louder than our political opinions
We demonstrate that it's possible to have strong convictions while still loving those who disagree with us
This doesn't mean we become politically neutral or avoid important issues. It means we engage politically as Christians first, not as partisans who happen to be Christian.

In Our Digital Age

Social media and digital technology present unprecedented opportunities and challenges for being salt and light.
Digital salt opportunities:
Seasoning online conversations with wisdom, humor, and hope
Preserving truth in an age of misinformation and fake news
Creating thirst for authentic community in an age of superficial connections
Digital light opportunities:
Illuminating truth in dark corners of the internet
Guiding people toward helpful resources and real community
Demonstrating authentic faith in an age of performance and image management
Digital dangers:
Hiding behind screens instead of engaging in real relationships
Becoming salt that's been diluted by the constant noise and distraction
Letting our digital personas replace rather than reflect our actual character

In Your Daily Spheres of Influence

In the workplace:Every Monday through Friday, you have opportunities to be salt and light in your professional environment. This might look like:
Being the person who refuses to participate in gossip or complaining sessions
Demonstrating integrity when no one is watching
Treating difficult customers with patience and respect
Being known as someone who lifts others up rather than tears them down
Offering to pray for coworkers going through difficult times (when appropriate)
Volunteering for tasks that others avoid
In your neighborhood:Your physical neighbors need to see salt and light lived out in practical ways:
Actually knowing your neighbors' names and caring about their lives
Being the house that kids know is safe and adults know they can trust
Maintaining your property in a way that adds value to the whole neighborhood
Organizing or participating in community improvement projects
Being the first to help when disaster strikes or crisis hits
Demonstrating what healthy family life looks like
In your family:Sometimes it's hardest to be salt and light with the people closest to us:
Seasoning family conversations with encouragement rather than criticism
Preserving family traditions and relationships when others want to give up
Creating thirst for spiritual things through your example rather than your nagging
Illuminating hope when family members are walking through dark seasons
Guiding younger family members toward wisdom and good choices

In Community Service and Social Action

Studies consistently show that churches and Christian organizations provide billions of dollars worth of community services annually—food banks, disaster relief, homeless shelters, addiction recovery programs, job training, childcare, elder care, and countless other forms of practical help.
But being salt and light goes beyond organized programs, as vital as they are. It's about individual Christians being so consistently different that people notice. It's about families that prioritize relationships over achievements, businesses that value people over pure profit, and individuals who demonstrate genuine peace in anxious times.

The Ripple Effect of Salt and Light

When Christians truly function as salt and light, the impact ripples far beyond what we can see or measure.
Personal ripple effects: When you consistently act as salt and light, it changes you. You develop spiritual muscles that make you stronger. You experience the joy that comes from living according to your God-given design. You build a reputation for reliability and integrity that opens doors for further influence.
Family ripple effects: Children who grow up in homes where parents model salt and light behavior develop different expectations for how people should treat each other. They learn that faith is not just something you talk about on Sundays, but something that shapes every aspect of daily life.
Community ripple effects: Communities with strong Christian influence tend to have lower crime rates, better schools, more volunteerism, and stronger social cohesion. This isn't because Christians are perfect, but because Christian values, when lived out consistently, create social benefits that extend to everyone.
Cultural ripple effects: Throughout history, Christian movements have been catalysts for positive social change—the abolition of slavery, women's suffrage, civil rights, hospital systems, university education, and countless other improvements to human civilization. This happens when Christians take seriously their calling to be salt and light in the world.

The Challenge: Making Our Impact Measurable

Here's the ultimate test of whether we're fulfilling our calling as salt and light: If all the Christians in our community disappeared tomorrow, would anyone notice the difference?
Let's make this personal and specific:
In your workplace: Would your absence be noticed not just because of what you do, but because of who you are? Do your coworkers count on you for more than just professional competence? Are you known for bringing out the best in tense situations?
In your neighborhood: Would your neighbors miss more than just your lawn being mowed and your garbage cans put away? Do they see you as someone they can count on in a crisis? Have you created relationships that go beyond polite waves?
In your family: Are you the person family members turn to for wisdom, encouragement, and prayer? Do you create an atmosphere of love and acceptance that draws family members together rather than driving them apart?
In your community: Do local organizations know they can count on you for volunteer service? Do struggling people know they can find help through you or your church? Are you contributing to solutions or just complaining about problems?
In your church: Are you someone who makes corporate worship, fellowship, and service stronger by your participation? Do newer believers look to you as an example of mature faith? Are you helping create the kind of city-on-a-hill witness that draws people toward Christ?

Two Vital Questions for Each of Us

As we consider our calling to be salt and light, we must honestly answer two fundamental questions:

Question 1: Are You Connected to the Source?

Are you plugged in to Christ? Have you made Him not just your Savior, but your Lord? You can't distribute power you're not connected to. You can't reflect light you're not receiving.
This is about more than a one-time decision to accept Christ, though that's essential. It's about daily, ongoing connection with Him through prayer, Scripture, worship, and obedience. It's about staying plugged in to the power source so that His life can flow through you into the world around you.
Many Christians try to be salt and light through their own effort and good intentions. But Jesus is clear: "Apart from Me you can do nothing" (John 15:5). The moment we try to generate our own saltiness or produce our own light, we become just another self-help program or social improvement society.

Question 2: Are You Living Out Your Identity?

Are you actually functioning as salt and light? Do the people around you honestly say their lives are better because you're showing Christ to them?
This isn't about perfection—we're all works in progress. But it is about direction and consistency. Are you growing in saltiness and brightness, or are you being diluted and dimmed by the world around you?
Maybe you need to ask Christ to renew your saltiness. Maybe you've become diluted by the world's impurities—materialism, selfishness, fear, bitterness, or pride. Maybe your light has dimmed under the basket of busyness, compromise, or spiritual complacency.
The beautiful truth is that Christ is always ready to restore our saltiness and rekindle our light. But we must be honest about our need and intentional about our response.

The Ultimate Goal: Pointing Others to the Father

Notice how Jesus concludes this teaching: "Let your light so shine before men, that they may see your good works and glorify your Father in heaven."
The goal of being salt and light is never to bring glory to ourselves. It's always to point people toward our heavenly Father. When people see our seasoned conversations, our preserving influence, and our thirst-creating joy, they should wonder about the source. When they observe our illuminating presence and our guiding wisdom, they should be drawn not to us, but to the One we represent.
This keeps us humble and focused. We're not trying to build our own reputation or create our own following. We're ambassadors representing the King, salt representing the Source of all flavor, lights reflecting the ultimate Light.

Conclusion: We Are Called for So Much More

As I bring this message to a close, I want to return to where we started. If every Christian in our community disappeared overnight, would anyone weep? Would anyone notice? Would anyone care?
Friends, we are called for so much more than just existing until Jesus returns. We're not meant to be spiritual consumers, coming to church to get our needs met while remaining disconnected from the world's pain and darkness. We're not supposed to be a holy huddle, keeping our faith private and our light hidden.
We are called to be salt—precious, essential, transformative.
Salt that seasons bitter situations with grace
Salt that preserves what is good and right and true
Salt that creates thirst for the living water only Christ can provide
We are called to be light—revealing truth, guiding to safety, illuminating hope.
Light that exposes darkness while pointing toward dawn
Light that works individually in focused ways and corporately in powerful ways
Light that always points beyond itself to the ultimate Light of the World
The world is desperately hungry for the seasoning we can provide. It's dying for lack of the preservation we can offer. It's thirsting for the hope we can create. It's lost in darkness, looking for the light we can shine.
We are called to be the difference-makers, the game-changers, the hope-bringers in a world that desperately needs what we have to offer.
If you've never accepted Christ as your Savior and Lord, today is the day to get connected to the Source. You can't be salt and light without first receiving the life of Christ.
If you're a believer but you realize your saltiness has been diluted or your light has been dimmed, Christ is ready to restore you. He specializes in renewal and revival.
If you're ready to take seriously your calling to be salt and light, ask God to show you where He wants to use you this week. What conversation needs your seasoning? What situation needs your preserving influence? What darkness needs your light?
Let's not be a church that could disappear without anyone caring. Let's be such good salt and such bright light that our community would genuinely grieve our absence and celebrate our presence.
The world is waiting. The harvest is ready. We are called for so much more.
Let us pray together.
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