The Renewed Mind

Ephesians 4:17–32 | Sermon by Thomas Garvin, Life & Truth Missions | Sunday 20th September 2026

Before You Listen

Follow your heart. Trust your feelings. You do you. If it feels right, it is right. Live your truth.

We have all heard it. It comes at us through films, adverts, and school assemblies, and if we are honest it has crept into the church too. "I felt led." "I just felt a peace about it." "That was great worship because it felt nice." Somewhere along the way feelings quietly took the throne and became the final authority.

This message is a direct challenge to that. Paul does not tell us to be transformed by the renewing of our feelings. In Romans 12:2 he says the renewing of the mind, and in Ephesians 4:23 he tells us to be renewed in the spirit of our minds. Before you listen, read Ephesians 4:17–32 slowly, and then ask yourself one question that runs underneath the whole passage: in my life, who is the captain and who is the crew? Is my mind governing my feelings, or are my feelings dragging my mind wherever they please?

After You've Listened — Recap & Application

Paul wrote this letter from prison to a church he knew by name. He had spent three years in Ephesus, a city built around the temple of Artemis and drenched in idolatry, magic, and sensuality. He knew these people, and he knew what a corrupted mind does to a life and to a city.

It helps to see how the letter is built. Chapters 1 to 3 are about what God has done: you were dead, and He made you alive. Then at chapter 4 verse 1 it turns on a hinge, "I therefore urge you to walk," and moves into instruction. So the renewing of the mind is not a self-help technique or positive thinking. It is the natural outworking of a resurrection that has already happened in you.

Then Paul shows us the direction of travel in the old life. It starts in the mind and ends in the body. The Gentiles walk "in the futility of their minds," they are "darkened in their understanding," and then they give "themselves up to sensuality." Futile thinking first, runaway sensation second. The gospel answer follows the same order but redeems it: put off the old self, be renewed in your mind, put on the new self. The mind is the hinge, and what corrupts the old self is "deceitful desires," desire that lies to us about what will satisfy.

This is where I pushed hard, and I want to be clear about what I was and was not saying. I am not throwing out the heart or pretending feelings do not matter. I am asking who is in charge. Scripture is blunt about trusting our own hearts. "The heart is deceitful above all things" (Jeremiah 17:9). "Whoever trusts in his own heart is a fool" (Proverbs 28:26). And when Proverbs 3:5 says "trust in the LORD with all your heart," we need to know the word does not mean what we now mean by "heart." The Hebrew points to the innermost person, including the mind, the will, and our sense of right and wrong. What we call "heart," our feelings, fits inside that word, but it does not fill it. It is a much bigger thing than emotion.

Paul's own warnings landed centuries ahead of our culture. People "will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions" (2 Timothy 4:3). Open YouTube and there they are, preacher after preacher promising your best life now, telling you to enjoy your sin because God loves you anyway. And those who perish do so "because they refused to love the truth" (2 Thessalonians 2:10). The mind can love the truth even when the emotions get hurt by it. That is why the mind has to be the boss.

I did not want to overcorrect into cold religion, so I put the strongest objection on the table. Yes, God made us emotional beings. Jesus wept. The Psalms are full of feeling. The fruit of the Spirit is love, joy, peace. A religion of pure intellect with no warmth is just Pharisaism, and it draws no one out of darkness. All true. But the problem was never feelings. It is the order. There are two ditches, not one. Feeling with no truth in it is useless, and truth with no warmth in it profits nothing. God's order is that truth governs the mind, and rightly ordered feelings follow. Emotions are meant to be responders, not drivers. Your mind meets a thing, weighs it against the truth, and your feelings respond. The other way round is chaos, and chaos is exactly what we are being trained into.

I used a small example that makes the point better than any lecture. In one of the Fast and Furious films a man is lying dead, someone is doing chest compressions to revive him, and a woman stops them, sits down, and talks him back to life with her feelings about their shared past. He comes back. That is the message soaked into our entertainment: do not deal with reality, do not tell the truth, do not do what is actually needed. Just feel your way through and it will all work out. If you are not paying attention, you absorb it without noticing.

This all runs right through the Bible. In the beginning God made man in His image, and the new self is "created after the likeness of God," "renewed after the image of its creator" (Colossians 3:10). Then came the fall. Eve "saw that the tree was good for food, and that it was a delight to the eyes, and... desired to make one wise" (Genesis 3:6), set against the plain word God had spoken. The very first sin was feeling and desire overruling revealed truth. That is the pattern Paul calls "deceitful desires." So renewing the mind is not moralism. It is the new covenant arriving in your actual thought life.

Then Monday comes, and Paul gets practical. Do not be a slave to anger and do not take offense easily. "Be angry and do not sin. Do not let the sun go down on your anger" (Ephesians 4:26). Govern your anger, do not feed it. "Good sense makes one slow to anger, and it is his glory to overlook an offense" (Proverbs 19:11). And forgive quickly. This one matters, because unforgiveness quietly destroys people. You can know someone for years and think they are fine until one subject comes up and out pours something that has been festering the whole time. Here is the key: forgiveness is not a feeling you wait to arrive, because it will not arrive on its own. It is a decision of the renewed mind grounded in truth. Mind leading, feelings following.

So the two messages could not be further apart. The world says your feelings are the truth, so follow them. Paul says be renewed in the very spirit of your mind, and let your new self reshape your feelings. I closed by pointing to Philippians 4:8 and asking everyone to sit with it through the week: "whatever is true, whatever is honorable, whatever is just, whatever is pure... think about these things." Discipline your mind. Be transformed by the renewal of your mind.

Reflection Questions

1. Where in your life have you been letting the crew steer the ship, allowing a feeling to overrule what you know to be true?
2. We looked at what "heart" really means in Proverbs 3:5. Does knowing it includes the mind and the will, not just the emotions, change how you read "follow your heart"?
3. Is there anyone you have been waiting to feel like forgiving? What would it look like to treat forgiveness as a decision of the renewed mind instead?
4. What are you feeding your mind through the week, and does it train you to love the truth or to chase sensation?

Bottom Line

Your feelings are not the captain. Truth governs the mind, and rightly ordered feelings follow. Emotions are responders, not drivers. Be renewed in the spirit of your mind, and let the truth reshape the way you feel, not the other way around.