As we come to the end of the Sermon on the Mount, we stand before one of the most searching passages in all of Scripture. These are words such as the world has never heard. Matthew tells us that the crowds were astonished because Jesus was teaching them as one having authority, not as their scribes (Matthew 7:28–29). There was something intrinsic about His words—an authority that did not rely on tradition or commentary.
That authority confronts us still.
The Sermon on the Mount does not merely invite admiration; it demands a response. Jesus does not offer a range of spiritual options or encourage us to find what works best for us. Instead, He presses us toward a decision. Again and again, He narrows the field to two alternatives: two paths, two trees, two foundations, two outcomes. One leads to life. The other leads to destruction.
The question that lingers at the end of the sermon is unavoidable: Who is this Man who speaks with such authority—and what will we do with His words?
Hearing Is Not Enough
Near the end of the sermon, Jesus issues a sobering warning. It is possible to call Him “Lord” and still miss the kingdom. This warning is not aimed at irreligious outsiders but at those who are near the truth—those who hear His words, who know His name, who speak His language.
There are two dangers Jesus highlights.
The first is verbal profession without obedience. People may say the right things, confess the right beliefs, and even sound passionate, yet never submit their lives to Christ’s authority. Words, by themselves, are not proof of surrender.
The second danger is intellectual assent without application. We can hear the truth, understand it, and even admire it, yet never act on it. Knowledge that does not lead to obedience can become a subtle form of self-deception. Scripture was never meant to stop at information. Its goal is transformation.
Jesus makes it clear that hearing without doing is not neutral. It is dangerous.
From Knowing to Doing
It may help to think of four movements in our engagement with Scripture.
First, we know something—we read it or hear it.
Second, we understand it—we grasp what it means.
Third, we may even experience it—God uses the truth in our circumstances.
But the final and decisive movement is application.
Wisdom, in biblical terms, is not the accumulation of truth but the application of truth. The Scriptures consistently press us toward obedience, because obedience is where truth becomes embodied in daily life. There is no sacred–secular divide here. Jesus addresses the whole person—thoughts, words, actions, and motivations.
The Test of Fruit
Jesus also warns us not to be deceived by outward appearances. External activity—even impressive religious activity—is not a reliable indicator of spiritual reality. The true test is fruit.
Fruit shows itself over time. It reveals the direction of a life, not just isolated moments of intensity. Authentic faith produces fruit in at least three areas: Christlike character, faithfulness to God’s Word, and godly influence on others.
This is not about perfection, but about trajectory. A living tree bears fruit. A dead tree does not.
Jesus links this directly to obedience. “If you love Me, you will keep My commandments” (John 14:15). Obedience is not the price of intimacy with God; it is the pathway to it. As we respond to what we know, we grow in relational knowledge—not merely information about God, but fellowship with Him.
A Radically Different Life
One of the great dangers in our time is a diluted view of discipleship. It is easy to pursue the standards of Christian culture without pursuing Christ Himself. But Jesus’ call is far more radical.
The Sermon on the Mount describes a life that is unmistakably different. It speaks of a different character, a different righteousness, a different love, a different ambition, and a different Master. This difference flows from the root of who we are, not merely from external behavior.
Jesus begins the sermon with the Beatitudes because discipleship begins with character. Yet He also makes it clear that this kind of life is impossible apart from the grace of God. The sermon assumes the new birth. Without it, the message would lead only to despair.
Human religion always drifts back toward rule-keeping and self-effort. But the gospel confronts us with a deeper truth: the problem is not merely what we do; it is who we are. We do not need minor adjustments. We need transformation of the heart.
If righteousness could be achieved through effort, then Christ died needlessly (Galatians 2:21). But because it cannot, Christ is our only hope.
What We Treasure Reveals Our Heart
Jesus then turns to the issue of treasure, because what we treasure reveals what we love. God has designed us to pursue gain, but the question is how we define it.
We can spend our lives chasing what the world prizes, only to discover too late that it was worthless. Jesus warns that what is highly esteemed among people may be detestable in the sight of God (Luke 16:15).
Instead, He calls us to invest in what endures—what cannot be stolen, corrupted, or diminished. This requires trust, because obedience often feels counterintuitive. We do not have memories of heaven to draw upon. We must take Christ at His word.
Where our treasure is, there our heart will be also. Over time, what we treasure does not merely shape our choices; it begins to master us.
One Master, One Foundation
This is why Jesus insists that we cannot serve two masters. Divided allegiance produces fragmented lives. Many attempt to live by two sets of rules—one for faith and another for success—but such compartmentalization cannot endure.
Jesus concludes the sermon with the image of two builders. Both hear His words. The difference is that one obeys and the other does not. Storms come to both houses. The difference is not the storm but the foundation.
This choice is more momentous than career, more significant than any earthly decision. It is a choice about life itself.
The Question Remains
The crowds were astonished by Jesus’ words, but astonishment is not enough. The Sermon on the Mount leaves us with a question that cannot be ignored:
Who is this Man—and will I trust Him enough to do what He says?
Not to choose is to choose. The invitation still stands.
Choose life.
To explore the Sermon on the Mount more deeply and discover how to thoughtfully answer the questions below, subscribe to Ken Boa Reflections on Substack.
Questions for Reflection
- Where in my life am I most tempted to hear Jesus’ words without fully doing what He says? What would faithful obedience look like in that specific area right now?
- What fruit is my life currently producing over time—not in moments of intensity, but in everyday patterns of character, words, and influence? How does this fruit reflect (or fail to reflect) the life of Christ in me?
- What do I treasure most when I am tired, unguarded, or anxious—and how does that reveal who or what I am truly trusting for security and significance?
- On which foundation am I practically building my life today: Christ’s words obeyed, or Christ’s words merely admired? How might God be inviting me to shift from profession to deeper surrender?
