Jesus’ “Sermon on the Mount”. . . Matthew 7:15–23
“A Tree and Its Fruit” original draft
In this concluding section of his Sermon on the Mount, Jesus continues to set before his listeners the serious choice of how they’ll respond to his teaching. He’s already spoken of two gates and two roads. Now he warns that not every person who claims to speak for God is trustworthy, and not every person who uses religious language is truly following him. Jesus calls his disciples to wise discernment, careful self-examination, and a faith that produces the lasting fruit of obedience.
In Matthew 7:15–23, Jesus uses two connected images: wolves disguised as sheep and trees recognized by their fruit. False prophets may appear harmless, spiritual, or persuasive, but their teaching, character, and influence eventually reveal their true nature. Jesus then gives an even more searching warning: A person may call him “Lord,” claim impressive religious experiences, and perform visible works in his name, yet still lack the relationship with him that produces obedience to the Father’s will. These verses call us away from spiritual appearance and toward genuine faith, humility, discernment, and faithfulness.
Jesus continues the conclusion of the Sermon on the Mount by using three images to illustrate the choice his followers face in responding to his call: two roads, two kinds of trees, and two houses built on different foundations. In this passage, Jesus focuses on discerning false prophets by their fruit and on the difference between outward religious claims and a life that truly does the Father’s will. Here you can watch an exceptional video clip from BibleProject titled “The Choice” (7 minutes).
Watch this video clip by Jesus Film Project that depicts Matthew 7, the concluding chapter of Jesus” Sermon on the Mount (4 minutes).
Jesus’ warnings are serious, but their purpose is protective rather than cynical. He doesn’t call his followers to distrust everyone, become suspicious of every pastor or teacher, or assume that every Christian leader is deceptive. He calls us to be wise rather than gullible. Christians are to receive faithful teaching with gratitude, test what they hear by Scripture (as the Bereans did; Luke ____), and pay attention to whether a teacher’s life and influence reflect the character of Jesus.
This passage also turns the question toward each of us. It’s easy to focus only on identifying false prophets “out there,” but Jesus’ words also ask whether our own lives match our profession of faith. Do our words about Jesus lead to growing humility, truthfulness, purity, mercy, repentance, love, and obedience? Jesus doesn’t call us to perform for others. He calls us to know him and to let his grace produce real fruit in us.
False Prophets: Wolves in Sheep’s Clothing (7:15–16)
Jesus begins with the direct command, “Watch out for false prophets.” A prophet is someone who claims to speak for God, to interpret his will, or to guide God’s people. Jesus warns that not everyone who speaks confidently about God, quotes Scripture, claims spiritual authority, or attracts a following truly represents him. Some may appear gentle and safe — like sheep — but inwardly they are “ferocious wolves” whose teaching and influence harm God”s people.
“Watch out for false prophets. They come to you in sheep’s clothing, but inwardly they are ferocious wolves. By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles?” (vv. 15–16, NIV).
The image of a wolf in sheep’s clothing emphasizes deception. False prophets don’t normally announce that they’re false. They may use Christian language, speak warmly, promise blessing, appeal to people’s fears or desires, and present themselves as especially anointed, enlightened, or spiritually powerful. Their outward appearance may be impressive. Jesus therefore tells his disciples not to judge teaching only by charisma, popularity, emotional impact, platform size, apparent success, or dramatic claims.
Jesus gives a practical test: “By their fruit you will recognize them.” Fruit includes the content of a teacher’s message, the pattern of his or her character, the use of money and power, treatment of vulnerable people, willingness to be accountable, and the spiritual effects produced in followers. Three essential questions must be asked and answered: (1) Does the teaching honor the truth about Jesus and agree with Scripture? (2) Does it encourage humility, holiness, love, repentance, justice, mercy, and faithfulness? Or (3) does it cultivate fear, greed, control, pride, sexual compromise, division, dependence on the leader, or contempt for others?
Discernment takes time. A single awkward phrase, an imperfect sermon, or a personal weakness doesn’t automatically prove that someone is a false prophet. Every Christian teacher is imperfect and needs correction. Jesus is speaking about a pattern of falsehood and harmful fruit, not demanding that we search for faults in everyone. Instead, we should test teaching carefully, pray for wisdom, compare what we hear with Scripture, and seek counsel from mature believers rather than reacting hastily or cynically.
Trees and Fruit: What the Life Reveals (7:17–20)
Jesus develops his warning with a simple truth from creation. The kind of fruit a tree consistently produces reveals the kind of tree it is. Grapevines don’t grow on thornbushes, and figs don’t come from thistles. In the same way, a person’s deepest loyalties eventually become visible in the direction of his or her life.
“Likewise, every good tree bears good fruit, but a bad tree bears bad fruit. A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Thus, by their fruit you will recognize them” (vv. 17–20, NIV).
In this immediate context, Jesus is still speaking first about false prophets. Their “fruit” includes the consequences of their teaching and ministry. False teaching eventually produces harmful results because it’s rooted in a distorted view of God, Jesus, the gospel, sin, grace, or obedience. Be aware that a teacher may promise freedom while encouraging sin, promise prosperity while exploiting people, promise spiritual power while seeking control, or use biblical language while reshaping the message to serve personal ambition.
At the same time, Jesus’ image reaches beyond leaders and asks all of us to examine the fruit of our lives. Good fruit isn’t sinless perfection, flawless emotions, uninterrupted success, or an impressive public ministry. Instead, it’s the growing evidence of God’s transforming work: repentance, humility, love, truthfulness, sexual integrity, mercy, self-control, forgiveness, generosity, faithfulness, and a willingness to obey Jesus when obedience is costly.
Fruit often develops slowly. A healthy tree isn’t judged by one day’s harvest, and a disciple isn’t defined solely by one failure, one season of struggle, or one difficult question. The issue is the ongoing direction of the life. When a person sins, does he or she confess, repent, seek help, and return to Jesus? Or does the person persistently excuse sin, resist correction, manipulate others, and refuse the truth? Jesus calls us to look for a continuing pattern, not demand instant perfection.
The warning about trees cut down and thrown into the fire reminds us that God takes truth and holiness seriously. Yet the purpose of the warning isn’t to make a tender-hearted believer panic. It’s to call those who are deceived, hypocritical, or unrepentant to turn to Jesus while there’s time. His grace is available to forgive, restore, and change every person who comes to him honestly in repentance and faith.
“Lord, Lord”: Knowing Jesus and Doing the Father’s Will (7:21–23)
Jesus now turns from false prophets to an even more personal warning. It’s possible to use the right religious language, claim loyalty to Jesus, participate in visible ministry, and even report remarkable spiritual experiences — yet still fail to know Jesus in a saving and obedient relationship. These words are among the most sobering in the Sermon on the Mount because they expose the difference between a public profession of faith and a life truly submitted to the Father.
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven. Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name and in your name drive out demons and in your name perform many miracles?’ Then I will tell them plainly, ‘I never knew you. Away from me, you evildoers!’” (vv. 21–23, NIV).
Repeating “Lord, Lord” expresses urgency and apparent devotion. But Jesus warns that words alone do not establish genuine discipleship. Calling Jesus “Lord” must be joined to a life that responds to his authority. The will of the Father isn’t an alternative path of earning salvation by doing enough good works. It includes trusting the Son, receiving God’s mercy, repenting of sin, and learning to obey Jesus from the heart. Genuine faith produces obedience because a person who knows Jesus is being changed by him.
The people in Jesus’ warning point to impressive religious accomplishments: prophecy, exorcism, and miracles done in his name. Jesus doesn’t deny that external activity can look extraordinary. He warns that outward spiritual power, public ministry, religious reputation, or dramatic experiences aren’t reliable proof of a person’s relationship with God. The decisive question is not, “What have I done publicly?” but, “Do I know Jesus, and is my life being shaped by his will?”
“I never knew you” doesn’t mean that Jesus lacked information about these people. He knows every human being. In this context, “knew” speaks of relationship, recognition, and belonging. They claimed association with Jesus, but they’d never belonged to him in the way their words suggested. Their life was marked by “evil” or lawlessness rather than by the Father’s will. Jesus’ warning confronts self-deception and calls us to turn from religious performance toward a real relationship with him.
This passage should lead us to humble self-examination, not hopeless fear. A sincere Christian who grieves over sin, seeks forgiveness, desires to obey Jesus, and depends on his grace shouldn’t read these verses as though one failure or unanswered question proves that Jesus doesn’t know him or her. Jesus is exposing confident religious pretenders, not rejecting repentant disciples. When we fail, we come to him honestly, receive his mercy, and continue following him.
Practical Application of This Sermon Passage (7:15–23)
† Test teaching by Scripture and fruit. Don’t accept a message merely because it’s popular, emotionally powerful, confidently delivered, or shared by a well-known leader. Compare it with the Bible’s teaching about Jesus, grace, sin, repentance, holiness, and the gospel. Also observe the long-term fruit of the teacher’s character, relationships, use of money, accountability, and influence.
† Examine your own life humbly. Ask God to show you where your profession of faith and your daily conduct are out of step. Do you see growing evidence of repentance, humility, mercy, truthfulness, generosity, forgiveness, and obedience? Where you see sin, don’t hide it or despair; bring it to Jesus, seek help, and take the next faithful step.
† Value relationship with Jesus over religious appearance. Church involvement, ministry activity, Bible knowledge, spiritual experiences, and the approval of others can all be good gifts. But none can replace personally trusting Jesus, receiving his grace, and submitting your life to his lordship. Make knowing and following Jesus — not being impressive — the center of your faith.
† Respond to correction with repentance, not defensiveness. Healthy fruit grows where a person remains teachable. When Scripture, the Holy Spirit, or mature believers expose a harmful pattern, receive the correction prayerfully. Ask God for strength to confess, repair what can be repaired, establish accountability, and grow in obedience.
Conclusion
Matthew 7:15–23 warns us not to confuse appearance with reality. A person may look like a sheep, speak like a prophet, carry religious authority, call Jesus “Lord,” and perform impressive works — yet still produce fruit that reveals a heart not submitted to God. Jesus calls his followers to wise discernment about teachers and humble self-examination about their own lives.
The good news is that Jesus doesn’t call us to manufacture perfect fruit through fear or self-effort. He calls us to know him, receive his mercy, remain rooted in his truth, and allow his grace to transform us. Over time, a life connected to Jesus will bear fruit that reflects his character: humility, truthfulness, repentance, love, mercy, faithfulness, and obedience to the Father’s will.
- Q. 1 What qualities or “fruit” should you look for when deciding whether a teacher, pastor, online speaker, author, or ministry is trustworthy?
- Q. 2 When you examine your own life, where do you see signs of God’s transforming grace? Where do you need repentance, help, accountability, or renewed obedience?
- Q. 3 Is there any way you’re tempted to rely on religious activity, knowledge, reputation, or past experiences rather than on a present, obedient relationship with Jesus?
Are you ready to take Warren’s 25-question Sermon on the Mount quiz? Answers with Bible references are included with your grade.