Matthew 15:10-20
Why Truth Feels Like an Attack
Our real problem is not what gets into us from the outside but what is already in our hearts. In Matthew 15:10-20, Jesus tells the crowd that what comes out of the mouth defiles a person, offends the Pharisees, and calls his disciples dull for missing it. Truth brings clarity and correction, and Jesus does not renovate the heart. He replaces it.
Message notes
Pastor Pat titles the message with a question: what’s my real problem? He pictures a homeowner who keeps patching cracks in the wall, replacing separated tile, adjusting a door that won’t close and redoing a buckling floor, until someone tells him he doesn’t have a drywall problem or a tile problem. He has a foundation problem. Pat also recalls the Florida tower that collapsed in 2021 after years of reports about structural damage. You could walk through a beautiful lobby and never know the danger underneath.
We do the same with our faith. We rearrange furniture and blame other people, because as long as the problem is out there, we don’t have to look at what is in here. In Matthew 15, Jesus names the misdiagnosis: “The real problem is not what you’ve let in. It’s what’s already there.”
The Pharisees had built a fence of oral tradition around the 613 commandments of the law, so complex that people needed experts to understand it. Jesus uses the written law to confront what men had added, and calls ordinary people to listen: what goes into the mouth does not defile, but what comes out does. Pat notes that later, in Matthew 22, Jesus sums up the whole law in loving God and loving your neighbor. Truth brings clarity, not confusion.
Clarity also brings offense. The Pharisees are offended because Jesus has shaken the food laws, Sabbath laws and circumcision, the rules that told them who to eat with, how to order life and who belonged. Underneath is the oldest human problem, self-determination. Peter asks Jesus to explain, and Jesus answers, “Are you still so dull?” Pat recalls Mr. Beaver on Aslan in Narnia: he’s not safe, but he’s good. “His correction is a sign of his affection for you.”
Jesus then lists what comes out of the heart, which Pat points out is the back half of the Ten Commandments. The Pharisees managed sin with more rules. Our culture redefines sin and trusts its own desires. Jesus transforms the heart. Pat walks through anger, sexuality, greed and false testimony, setting the Pharisee’s answer and the culture’s answer beside what Jesus says.
The prophets saw it coming: Ezekiel’s heart of flesh in place of stone, and Jeremiah’s law written on the heart. Pat’s application is to read God’s word and let God’s word read you, and the service moves into communion, remembering the one who took on our sin. “We don’t preach a gospel of try harder. We preach a gospel of surrender more.”
From the message
We often try and renovate behaviors that Jesus wants to transform at a heart level.
The real problem is not what you’ve let in. It’s what’s already there.
His correction is a sign of his affection for you.
We don’t preach a gospel of try harder. We preach a gospel of surrender more.
Life Group discussion guide
Why Truth Feels Like an Attack, Matthew 15:10-20. September 6, 2026.
Start here
Have you ever fixed the same problem in a house or a car over and over, only to find out the real cause was somewhere else?
Read Matthew 15:10-20
Open your Bibles and read it out loud together before you start.
What does it say?
In Matthew 15:11, what does Jesus say defiles a person, and what does he say does not?
How do the disciples report the Pharisees’ reaction in verse 12, and how does Jesus answer in verses 13-14?
What does Jesus list in verse 19 as coming out of the heart?
What does it mean?
The Pharisees added thousands of teachings to the law to keep from breaking it. Why would Jesus’ simple statement in verse 11 shake their whole way of life?
Pastor Pat noticed that the list in verse 19 follows the back half of the Ten Commandments (Exodus 20:13-16). What does it tell us that Jesus anchors his correction in God’s written word?
Ezekiel 36:26 promises a heart of flesh in place of a heart of stone. How is a new heart different from a renovated one?
What do we do with it?
Where are you rearranging furniture in your life, fixing a habit or a schedule, while avoiding what is going on in your heart?
Think of a recent time truth offended you, from Scripture or from someone close to you. Did you get defensive or get curious, and what would curiosity look like now?
This week, how will you read God’s word and let it read you, even when it confronts the way you work, spend or speak?
Pray
Ask the Holy Spirit to show you what is already in your heart that you have been blaming on other people or circumstances, and ask Jesus to replace what you have been trying to renovate.
New Hope Hawaii Kai. Watch the message and read the notes at newhopehk.org/sermons/my-real-problem/