Skip to content
Christchurch Miami

How to be Salt in a Decaying World - Matthew 5:13-22, John 1:4, Matthew 22:36-40

Kent Keller Sunday, November 23, 2025

Monday

2025-11-24

How Small a Fire

"So also the tongue is a small member, yet it boasts of great things. How great a forest is set ablaze by such a small fire!"

— James 3:5

Kent began where he lives: "I'm a preacher. I make my living with words, and I have always been fascinated by words — their power, their flexibility."

Think of the times a single word landed hard on you. Maybe a one-syllable word, a yes or a no. Think of the things you have said yes to. The things you have said no to. How those single syllables set the course of your life.

Words can make us laugh and make us cry. They can make us angry and make us sad. They can inspire and they can crush. They can start wars. They can end wars.

January 20, 1961 — ask not what your country can do for you. August 28, 1963 — I have a dream. June 12, 1987, at the Brandenburg Gate, against the advice of every adviser — Mr. Gorbachev, tear down this wall. September 11, 2001, aboard United Flight 93, forty passengers and crew.

James says the tongue is a small member that boasts great things. Behold, how great a forest is set ablaze by such a small fire.

Small. Never insignificant.

Pray

Father, my words are small and they are never neutral. Let what I say this week build rather than burn. Make my tongue a fire that warms. Amen.

Reflect

What is one word or sentence someone said to you that changed your direction? What are your words doing to the people who hear them?

Tuesday

2025-11-25

You Are the Salt

"“You are the salt of the earth, but if salt has lost its taste, how shall its saltiness be restored? It is no longer good for anything except to be thrown out and trampled under people’s feet."

— Matthew 5:13

"You are the salt of the earth."

Are. Not should become, not try to be. Jesus is describing, not commanding — the command comes later.

In a world without refrigeration, salt was not a seasoning first. It was a preservative. You packed it around meat to hold back the rot, because decay is what happens to everything left to itself.

That is the assumption underneath the metaphor: the world is decaying. Not because it is uniquely bad right now, but because that is the direction unattended things go.

And Jesus says his people are what is packed into it to slow that down.

Notice that salt only works on contact and only in small quantities. A pile of salt in the corner of the kitchen preserves nothing. It has to be pressed into the thing that is going bad.

Which means the point of your faith was never a sealed container of like-minded people. It was contact — you, in the place you actually are, doing what salt does.

Pray

Lord, you did not call me to be stored safely. Press me into the places that need preserving, and make my presence there do what salt does. Amen.

Reflect

Where has your faith become a container rather than contact? Where are you actually pressed into a decaying situation?

Wednesday

2025-11-26

A City on a Hill

"“You are the light of the world. A city set on a hill cannot be hidden."

— Matthew 5:14

"You are the light of the world. A city set on a hill cannot be hidden."

Salt and light do opposite jobs, and Jesus gives both. Salt works invisibly, buried in the thing it preserves. Light works by being seen.

So the Christian life is not one or the other. It is hidden faithfulness *and* visible witness — quiet integrity nobody notices, and a life that is unmistakably different when people look.

"A city set on a hill cannot be hidden." That is not an instruction. It is a fact. There is no such thing as a secret city on a hilltop; the geography settles it.

Which raises an uncomfortable possibility. If your faith is entirely undetectable to the people around you — if a colleague of five years would be genuinely surprised to learn you follow Jesus — Jesus' description says something has gone wrong. Not that you are a bad person. That the light is under something.

He will get to that tomorrow. Today: you are already the light. That much is settled.

Pray

Lord, you called me light before I did anything to earn it. Show me where I have gone undetectable, and give me courage to be seen as yours. Amen.

Reflect

Would the people you see most often be surprised to learn you follow Jesus? What does your honest answer tell you?

Thursday

2025-11-27

Nobody Lights a Lamp to Hide It

"Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house."

— Matthew 5:15

Happy Thanksgiving.

"Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house."

The image is almost comic. Strike the flint, get the flame going, and then carefully set a bowl over it. Nobody does that. It defeats the entire purpose, and it eventually puts the flame out.

Jesus assumes you know that — and then leaves you to ask why you do it anyway.

The baskets are usually respectable. Not wanting to seem pushy. Not knowing enough. Not being a good enough example to have standing. Fear of the conversation going badly. Every one of them sounds like humility and functions like a basket.

And today, of all days, the house is full. Thanksgiving puts you at a table with people you may not see again for a year — people who will notice what you are grateful *to*, and whether gratitude in you has a direction.

Giving light to all in the house may be as simple as that. On a stand. Not under a bowl.

Pray

Father, thank you for this table and these people. My reasons for staying hidden sound reasonable even to me. Take the basket off, and let this house see what I am grateful to. Amen.

Reflect

What basket have you been putting over your light — and what respectable name have you given it?

Friday

2025-11-28

So That They May See

"In the same way, let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven."

— Matthew 5:16

Here is the command the whole passage has been building to, and the last phrase is the one that keeps it from becoming vanity.

"Let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven."

Earlier in this same sermon Jesus says do not do your good works to be seen by others. Now he says let your light shine before others so they see your good works. It looks like a contradiction and it is not — the difference is entirely in the last clause.

Works done to be seen end with people thinking well of you. Works done so that God is glorified end with people thinking well of him.

Same action, opposite destinations, and only you know which one you are on.

Kent spent the morning on the power of words. This is where words alone stop being enough. Jesus does not say let people hear your good arguments. He says let them see your good works — and then let the seeing carry them past you, to your Father.

You are the salt. You are the light. Now go be it somewhere.

Pray

Father, let people see what I do and end up looking at you. Keep me from working for an audience, and make my life a window rather than a mirror. Amen.

Reflect

When people see the good you do, where does their attention land — on you, or on God? What would shift it?

Subscribe to the podcast

Every Sunday sermon, in whatever app you already use.

YouTube Apple Podcasts Spotify RSS

See all our podcasts →

Scripture quotations are from the ESV® Bible (The Holy Bible, English Standard Version®), © 2001 by Crossway, a publishing ministry of Good News Publishers. Used by permission. All rights reserved.