Bible Study Sunday | What Defiles a Person

This morning, we continue our deep dive into the Gospel of Matthew.

We are created in the image of God. What then defiles a person?

And he called the people to him and said to them, “Hear and understand: it is not what goes into the mouth that defiles a person, but what comes out of the mouth; this defiles a person.” Then the disciples came and said to him, “Do you know that the Pharisees were offended when they heard this saying?” He answered, “Every plant that my heavenly Father has not planted will be rooted up. Let them alone; they are blind guides. And if the blind lead the blind, both will fall into a pit.” But Peter said to him, “Explain the parable to us.” And he said, “Are you also still without understanding? Do you not see that whatever goes into the mouth passes into the stomach and is expelled? But what comes out of the mouth proceeds from the heart, and this defiles a person. For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false witness, slander. These are what defile a person. But to eat with unwashed hands does not defile anyone.”

‭‭Matthew‬ ‭15‬:‭10‬-‭20‬ ‭ESV‬‬
https://bible.com/bible/59/mat.15.10-20.ESV

About Matthew’s Gospel

Matthew continually confronts the tension between outward religion and inward transformation. Again and again, Jesus exposes the danger of looking righteous while neglecting the condition of the heart.

“It is not what goes into the mouth that defiles a person, but what comes out of the mouth; this defiles a person.”

Matthew 15:11 ESV

The Pharisees were deeply concerned with ceremonial cleanliness and outward tradition. They believed if you look good on the outside then you’re good on the inside. Jesus redirects the conversation entirely. Defilement is not about external contamination. Rather, it is about the corruption that already exists within the human heart. Experience has taught us that we can dress ourselves up so we look beautiful to the world, yet remain filled with vile thoughts on the inside. Sin blooms from the inner chambers of our being. It’s not the world that makes us sinful. It’s ourselves and the corrupt desires of our heart.

This is a sobering passage because Jesus does not blame society, culture, or circumstances for sin. He says evil thoughts, slander, adultery, false witness, and hatred proceed from within us. Our words and actions reveal what rules our hearts.

We were created in the image of God, designed for holiness, truth, and communion with Him. Sin distorts that image, first internally, then externally. Our mouth becomes a window into our soul.

What words come out of us when pressure rises? What do those words reveal about our hearts?

What fills our minds when no one else sees? Do we set our minds on the things of God or give way to the flesh?

What Jesus is calling for isn’t simply behavior modification. He is calling for a transformed heart.

The good news of the Gospel is that Christ does not just expose what defiles us. He cleanses us. The same Jesus who speaks these hard truths also went to the Cross to redeem broken sinners and make us new.

Friends, this week, I encourage you to spend time surrendering your heart to God.