Jesus concluded His Sermon on the Mount with a powerful illustration about two builders. The passage is familiar to almost every Christian, yet I believe there is a practical lesson in it that deserves careful consideration.
Jesus said:
Matthew 7:24–27 — “Therefore everyone who hears these words of Mine and acts on them, may be compared to a wise man who built his house on the rock. And the rain fell, and the floods came, and the winds blew and slammed against that house; and yet it did not fall, for it had been founded on the rock. Everyone who hears these words of Mine and does not act on them, will be like a foolish man who built his house on the sand. The rain fell, and the floods came, and the winds blew and slammed against that house; and it fell—and great was its fall.”
Luke records the same teaching this way:
Luke 6:46–49 — “Why do you call Me, ‘Lord, Lord,’ and do not do what I say? Everyone who comes to Me and hears My words and acts on them, I will show you whom he is like: he is like a man building a house, who dug deep and laid a foundation on the rock; and when a flood occurred, the torrent burst against that house and could not shake it, because it had been well built. But the one who has heard and has not acted accordingly, is like a man who built a house on the ground without any foundation; and the torrent burst against it and immediately it collapsed, and the ruin of that house was great.”
There are many interpretations of this passage. I would like to consider one practical application that I believe can be especially helpful in the life of a believer.
Is the Wise Man a Believer and the Foolish Man a Nonbeliever?
A common interpretation is that the wise man represents a believer and the foolish man represents a nonbeliever.
There is certainly a warning concerning false professions of faith in the surrounding context. Just before this teaching, Jesus said:
“Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of heaven, but he who does the will of My Father who is in heaven will enter.” — Matthew 7:21
So we should not completely separate Jesus' teaching from the question of genuine discipleship.
However, whether we understand the two builders primarily as representing genuine and false professors, or whether we apply the passage to the daily choices of genuine believers, Jesus' practical principle is unmistakable:
Hearing the words of Christ is not enough. We must act upon them.
Notice the repeated emphasis:
“Everyone who hears these words of Mine and acts on them...” — Matthew 7:24
And in Luke:
“Everyone who comes to Me and hears My words and acts on them...” — Luke 6:47
The contrast is between hearing and doing.
That gives us an important practical lesson for our Christian walk. A believer can know what Jesus commanded and yet face a choice about whether he will actually obey.
It Is Not Merely About Where They Built
Another common mental picture is that one man built his house on a beautiful rocky location while the other foolishly chose to build his house on the sand.
But Luke gives us a more precise picture.
The wise man: “dug deep and laid a foundation on the rock.”
The foolish man: “built a house on the ground without any foundation.”
The difference was not simply the outward location. The difference was how they were built.
One builder was willing to dig deep and establish a solid foundation.
The other was unwilling to do the deeper work.
That gives us a wonderful picture of the Christian life.
Let Us Call Them Andrew and Caleb
To make this more practical, let us imagine two men named Andrew and Caleb.
Both are believers in Christ.
Both have received everything God has provided for their Christian lives. Neither earned these resources. They were given freely by God.
Peter says:
2 Peter 1:3 — “Seeing that His divine power has granted to us everything pertaining to life and godliness, through the true knowledge of Him who called us by His own glory and excellence.”
Imagine Andrew and Caleb being given exactly the same amount of building material. They have everything necessary to build the house.
They are both thrilled that the materials have been provided freely, since it was impossible for them to come up with those materials themselves.
But now they have a responsibility. They must build.
They discover that there are two ways they can build the house.
They can dig deep and lay a solid foundation on the rock.
Or they can avoid the deeper work and build without a proper foundation.
From the outside, both houses may look almost identical.
The house with the deep foundation may not look any more impressive than the other house. In fact, while construction is taking place, the house with the deeper foundation may look worse because the builder has spent so much time digging a hole that nobody can see.
People walking by may admire both houses.
They may have no idea what is underneath them.
Both Andrew and Caleb know that the foundation matters.
Andrew Chooses to Dig Deep
Andrew looks at the two options.
He realizes that digging deep will require effort. It will require persistence. It will require sweat.
He knows that nobody may ever see the work he is doing beneath the surface.
Nevertheless, Andrew decides that it is worth it. He digs deep and lays the foundation on the rock.
He understands that the foundation is more important than appearances.
Caleb looks at the same two options and also realizes that digging deep will require effort.
But Caleb reasons differently.
“Why work so hard when nobody will see the foundation?”
He thinks the easier way is good enough.
Besides, he reasons, storms don't come every day.
Perhaps a major flood will never come.
Why endure the inconvenience and effort of digging deep when the house looks just as good from the outside?
So Caleb builds without establishing a deep foundation.
Both houses are completed, and they look beautiful.
Both men move into their houses.
People passing by admire both houses.
From the outside, there is little difference.
But underneath, there is a profound difference.
One has a foundation, and the other does not.
Then the Storm Comes
Jesus says: “The rain fell, and the floods came, and the winds blew and slammed against that house...”
Eventually, the storm comes.
And the storm isn't interested in how beautiful the house looks.
It doesn't care how impressive the outside appears.
It tests the foundation.
The house with the solid foundation stands, and the house without the foundation collapses.
And Jesus says: “The ruin of that house was great.”
This is where Jesus' illustration becomes very practical for us.
The storm does not create the foundation. The storm reveals the foundation.
The foundation was established long before the storm arrived.
The Foundation Is Built Through Obedience
What does this look like in our everyday Christian lives?
Jesus has given us many commands.
We are told to forgive others. We are told to love one another.
We are told to rejoice always. We are told not to be anxious.
We are told to give thanks in everything. We are told to confess our sins.
We are told to be humble. We are told to abstain from sexual immorality.
We are told to love our enemies.
We hear these commands through Scripture, preaching, Bible studies, and personal reading.
But hearing is one thing; doing is another.
James puts it very plainly:
James 1:22 — “But prove yourselves doers of the word, and not merely hearers who delude themselves.”
The danger is not merely that we don't know what God wants us to do.
Sometimes we know exactly what He wants us to do.
The real question is: What will I do with what I know?
Consider Forgiveness
Let's return to Andrew and Caleb.
Suppose a man named Jacob has done something deeply hurtful to both of them.
Both Andrew and Caleb are angry, and both have reasons to be angry.
Both feel justified in holding a grudge, and both have strong feelings that say, “Don't forgive him.”
But both also know what Jesus commanded.
Jesus said: “For if you forgive others for their transgressions, your heavenly Father will also forgive you.”
— Matthew 6:14
They know that forgiveness is God's will, and both have already experienced God's forgiveness personally.
They have received God's love:
Romans 5:5 — “The love of God has been poured out within our hearts through the Holy Spirit who was given to us.”
They have received abundant grace:
Ephesians 1:7–8 — “In Him we have redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace which He lavished on us.”
They have received the Holy Spirit:
Titus 3:5–6 — “He saved us... according to His mercy, by the washing of regeneration and renewing by the Holy Spirit, whom He poured out upon us richly through Jesus Christ our Savior.”
They have been given everything necessary for life and godliness.
The command to forgive is therefore not a command given to people who have no divine provision.
God has already provided what they need.
But now Andrew and Caleb have a choice.
This Is Where the Rubber Meets the Road
Andrew still feels angry, and he still feels the temptation to hold the grudge.
But Andrew makes a decision:
“I will obey Christ even though my feelings are telling me otherwise.”
He chooses to forgive Jacob, and he does not necessarily feel like forgiving Jacob.
His feelings have not magically disappeared.
But Andrew chooses not to allow his feelings to determine his obedience. As Paul says in 2 Corinthians 10:5, “we are taking every thought captive to the obedience of Christ.”
He chooses to trust God's wisdom rather than his own feelings.
He chooses the way of obedience, and that choice may involve genuine inner suffering.
Holding a grudge can sometimes feel satisfying. There can be a certain pleasure in replaying the offense, imagining revenge, or maintaining the belief that the other person deserves our anger.
Forgiveness may feel painful.
But Andrew is willing to endure that short-term discomfort because he values obedience to Christ more than the temporary pleasure of satisfying his flesh.
This is the process of denying our will when our will is in conflict with God's will. This is also the process of falling to the ground and dying, as Jesus illustrated in John 12:24:
“Truly, truly, I say to you, unless a grain of wheat falls into the earth and dies, it remains alone; but if it dies, it bears much fruit.”
Caleb Makes a Different Choice
Caleb faces exactly the same situation.
He knows what Jesus commanded, and he knows what Scripture says.
He knows that the Holy Spirit is reminding him to forgive.
But Caleb doesn't want to experience the discomfort of letting go of his anger.
He reasons:
“Jacob doesn't deserve forgiveness.” “I have every reason to be angry.”
“If I forgive him, it will feel like I'm saying what he did wasn't that bad.”
So Caleb chooses to hold on to the grudge.
He chooses what feels better in the moment, not to obey.
The Holy Spirit does not abandon Caleb, instead, God continues to deal with him.
As Hebrews says:
Hebrews 4:7 — “Today if you hear His voice, do not harden your hearts.”
Caleb has opportunities to respond.
He can repent, confess his sin, and return to obedience.
1 John 1:9 — “If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.”
But imagine that Caleb repeatedly suppresses that conviction.
Eventually, he begins to justify himself.
He builds arguments explaining why his disobedience is reasonable.
He convinces himself that forgiveness is unnecessary.
And eventually, something dangerous happens.
He begins to call obedience foolish.
When Obedience Looks Foolish
The way of the cross often looks foolish to the natural mind.
Paul says in 1 Corinthians 1:18 — “For the word of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.”
In its immediate context, Paul is speaking about the message of Christ crucified—the gospel itself—which appears foolish to the wisdom of the world.
We should not redefine this verse to mean that “the word of the cross” simply means denying our will.
But there is a powerful application for the Christian life.
The cross represents a way of life that is completely contrary to the wisdom of the flesh.
The world says: “Get even.”
The cross says: “Forgive.”
The world says: “Look out for yourself.”
The cross says: “Deny yourself.”
The world says: “Do whatever makes you happy.”
The cross says: “Follow Christ.”
The world says: “Don't allow anyone to take advantage of you.”
The cross says: “Love your enemies.”
The world may consider this foolish.
And sometimes our own flesh considers it foolish.
Caleb begins to think:
“Why should I suffer by forgiving Jacob?” “Why should I deny myself?”
“Why should I give up the pleasure of holding this grudge?”
From the perspective of the flesh, Caleb's choice seems reasonable.
But from God's perspective, Caleb is choosing the foolish path.
Jesus Himself Walked This Path
Jesus did not ask us to walk a path that He Himself was unwilling to walk.
Throughout His earthly life, Jesus submitted Himself to the Father's will. Remember what He said in the Gospel of John?
“For I have come down from heaven, not to do My own will, but the will of Him who sent Me.” — John 6:38
The clearest example comes in Gethsemane:
“Yet not My will, but Yours be done.” — Luke 22:42
Jesus experienced the agony of what was before Him, yet He submitted His will to the Father's will.
And Jesus had to suffer every time He denied His will in order to obey the Father's will, as the author of the Book of Hebrews says:
“Although He was a Son, He learned obedience from the things which He suffered.” — Hebrews 5:8
This is the pattern Jesus gives His disciples.
Luke 9:23 — “If anyone wishes to come after Me, he must deny himself, and take up his cross daily and follow Me.”
Denying our will does not mean pretending that we have no will.
It means that when my will conflicts with God's will, I choose God's will.
That is where obedience becomes real.
The Same Provision, Different Choices
Andrew and Caleb received the same divine provision.
Both received God's love, grace, and the Holy Spirit.
Both knew the command of Christ, and both had the ability to make a choice.
Both experienced the same temptation.
The difference was not what God had given them.
The difference was what they chose to do with what God had given them.
Andrew chose obedience, and Caleb chose his own desire.
And that brings us back to Jesus' illustration.
The difference between the wise builder and the foolish builder is ultimately demonstrated in what each person does with the words of Christ.
Abiding and Fruit
This also connects beautifully with Jesus' teaching in John 15.
Jesus said in John 15:5 — “I am the vine, you are the branches; he who abides in Me and I in him, he bears much fruit, for apart from Me you can do nothing.”
Andrew's obedience does not mean that Andrew is producing the fruit by his own human strength.
Rather, Andrew is yielding himself to Christ by choosing to obey.
And as he abides in Christ, Christ produces fruit through him.
This is why the Christian life is neither:
“I do everything by my own strength,”
nor:
“God does everything while I make no choices.”
God provides everything necessary for us to make the right choices.
We respond by yielding our will to Him in obedience.
And the Spirit produces the fruit.
God provides → we choose obedience → the Spirit produces fruit.
That is not salvation by works.
It is the practical outworking of the life God has already given to the believer.
The Foundation Is Usually Hidden
There is something else remarkable about Jesus' illustration.
The foundation is hidden.
People walking by Andrew's house may never know how deeply he dug.
They may never see the hours of labor and the sweat.
They may never know how many times Andrew had to choose obedience when his feelings told him otherwise.
The same is true in our Christian lives.
Nobody may see when we choose to forgive.
Nobody may see when we reject anxiety and choose to trust God.
Nobody may see when we confess a sin instead of hiding it.
Nobody may see when we choose humility instead of pride.
Nobody may see when we love someone we don't feel like loving.
Nobody may see when we choose gratitude instead of complaining.
But every one of those choices is part of the foundation.
The deepest work God does in our lives is often work that nobody else can see.
The Storm Reveals What We Have Built
Eventually, storms come.
Trials come, temptations come, and disappointments come.
Persecution may come.
Loss may come.
Circumstances may become so difficult that our outward appearance is no longer enough to sustain us.
At that moment, the question is not:
“How beautiful is my house?”
The question is:
“What kind of foundation have I built?”
The storm doesn't create the foundation.
The storm reveals the foundation.
And this is why Jesus' teaching is so practical.
We should not wait until the storm comes to begin building.
We build today, we obey today, and we forgive today.
We trust today, we confess today, and we love today.
We deny ourselves today.
We take up our cross today.
We follow Christ today.
Every act of obedience is another opportunity to dig deeper.
Conclusion
Jesus' teaching about the wise and foolish builders is ultimately a call to obedience.
We can hear His words without acting upon them.
We can know what Scripture says without obeying it.
We can understand the command intellectually while allowing our feelings and desires to dictate our choices.
But Jesus calls us to something more.
He calls us to hear and act.
The wise builder is not merely the person who knows what Jesus said.
The wise builder is the person who chooses to do what Jesus said.
And that obedience will sometimes require denial of our self-will.
It may require us to forgive when we want to hold a grudge.
It may require us to love when we don't feel loving.
It may require us to trust when we are afraid.
It may require us to give thanks when circumstances are difficult.
It may require us to confess when we would rather hide.
It may require us to surrender our will when our will wants something else.
These choices may seem small, and the foundation being built may be completely invisible to others.
But it is precisely through these daily choices that the foundation becomes strong.
We do not build the foundation when the storm comes.
We reveal the foundation we have been building every day before the storm came.
So let us not call obedience foolish.
Let us not despise the principle of denying our will and taking up our crosses.
Let us not allow our feelings to become our master.
Instead, let us hear the words of Christ, deny ourselves, take up our cross, and follow Him.
For when the rain falls, the floods come, and the winds blow, the house that has been built upon the rock will stand.
“Everyone who hears these words of Mine and acts on them, may be compared to a wise man who built his house on the rock.” — Matthew 7:24
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