What Is the Sermon on the Mount? Understanding Matthew Chapter 5

Yochanan

March 25, 2025

When people refer to the Sermon on the Mount, they are often speaking of one of the most powerful and iconic teachings in the New Testament. Found in the Gospel of Matthew, chapters 5 to 7, this collection of teachings by Jesus is more than just a sermon—it is a blueprint for the Christian life. In this article, we’ll explore Matthew chapter 5, where the sermon begins, and uncover the depth, meaning, and modern relevance of Jesus’ words.

The Setting: Why Did Jesus Preach on a Mountain?

Jesus delivering his message on a mountain was more than a practical decision for acoustics. In Jewish tradition, mountains were symbolic of closeness to God. Think of Moses receiving the Ten Commandments on Mount Sinai. By ascending a mountain to teach, Jesus mirrored that imagery, offering a “new law” that would guide the hearts and behaviors of his followers—not just their external actions.

Matthew 5:1-2 says,
“Now when Jesus saw the crowds, he went up on a mountainside and sat down. His disciples came to him, and he began to teach them.”

This moment signals something intimate and sacred. He wasn’t just addressing the masses—he was teaching his disciples, and through them, future generations of believers.

The Beatitudes: A Radical Redefinition of Blessedness

The first twelve verses of Matthew 5 are famously known as The Beatitudes, each beginning with “Blessed are…”

Jesus flips societal expectations upside down:

  • Blessed are the poor in spirit, for theirs is the kingdom of heaven.
  • Blessed are those who mourn, for they will be comforted.
  • Blessed are the meek, for they will inherit the earth.
  • Blessed are those who hunger and thirst for righteousness, for they will be filled.
  • Blessed are the merciful, for they will be shown mercy.
  • Blessed are the pure in heart, for they will see God.
  • Blessed are the peacemakers, for they will be called children of God.
  • Blessed are those who are persecuted because of righteousness, for theirs is the kingdom of heaven.

These are not just poetic lines—they are deeply countercultural. They reveal that God’s blessing isn’t reserved for the powerful, the rich, or the victorious, but for those who are humble, compassionate, and devoted to justice.

Salt and Light: The Call to Influence the World

In verses 13-16, Jesus uses two powerful metaphors to describe the role of His followers: salt and light.

  • “You are the salt of the earth.”
    Salt preserves and enhances flavor. Christians are called to preserve goodness and add value to the world around them.
  • “You are the light of the world.”
    Light dispels darkness. Followers of Jesus are meant to illuminate truth, hope, and love in a world often consumed by fear and confusion.

Jesus adds:
“Let your light shine before others, that they may see your good deeds and glorify your Father in heaven.”

This passage emphasizes that our actions should reflect God’s love and character in a visible way.

Fulfillment, Not Abolition, of the Law

Verses 17-20 clarify a common misconception. Jesus says:
“Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them.”

Jesus affirms the Old Testament’s importance but takes it deeper. He emphasizes internal transformation, not just external obedience. He challenges the religious elite by saying that one’s righteousness must surpass that of the Pharisees to enter the kingdom of heaven.

This is not about following more rules—it’s about living with sincerity, love, and humility from the heart.

Righteousness Redefined: From Actions to Intentions

From verse 21 onward, Jesus intensifies the meaning of the commandments. He moves from outward behavior to inward motivation:

  • Murder and anger: “You have heard it was said… You shall not murder… But I tell you that anyone who is angry with a brother or sister will be subject to judgment.”
  • Adultery and lust: “Anyone who looks at a woman lustfully has already committed adultery with her in his heart.”
  • Divorce and integrity: He addresses the importance of commitment and personal responsibility in relationships.
  • Oaths and honesty: Jesus discourages swearing oaths, teaching instead to be so honest that your simple “yes” or “no” is enough.

This teaching isn’t meant to shame or burden, but to lead to deeper freedom. Jesus shows that real holiness comes from a transformed heart, not just moral behavior.

Love Your Enemies: The Heart of Kingdom Ethics

One of the most challenging parts of Matthew 5 comes near the end:

“You have heard that it was said, ‘Love your neighbor and hate your enemy.’ But I tell you: Love your enemies and pray for those who persecute you.”

This call to radical love is perhaps the clearest expression of the kingdom of God. Jesus calls His followers to rise above natural instincts for revenge or bitterness. Instead, He calls for mercy, prayer, and forgiveness—even for those who cause harm.

This principle isn’t just moral—it’s spiritual. It mirrors God’s love for us when we didn’t deserve it.

Aiming for Perfection: God’s Standard of Love

The chapter concludes with a striking command:

“Be perfect, therefore, as your heavenly Father is perfect.” (v. 48)

Of course, human perfection in the moral sense is unattainable. But Jesus isn’t calling for flawlessness—He’s calling for wholeness and complete love. The word “perfect” here (in Greek, teleios) means mature, complete, whole.

Jesus is inviting His followers to grow into God’s way of love, to live lives that reflect divine mercy, compassion, and holiness.

Why Matthew 5 Still Matters Today

Even after 2,000 years, Matthew 5 speaks directly to modern hearts. In a world full of injustice, anxiety, conflict, and superficiality, the Sermon on the Mount offers a deeper, truer path to peace and meaning.

It challenges us not only to believe, but to live our beliefs.
Not just to do good things, but to become good people.
Not just to follow laws, but to let love and humility shape our every thought.

Jesus didn’t come just to give us rules—He came to transform us from the inside out. And Matthew chapter 5 is the foundation of that transformation.

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