Redeemed by Christ

Big Idea

You are God's child—not because you earned it, but because Christ did.

Galatians 3:15–29 “Brothers and sisters, I’m using a human illustration. No one sets aside or makes additions to a validated human will. Now the promises were spoken to Abraham and to his seed. He does not say “and to seeds,” as though referring to many, but referring to one, and to your seed, who is Christ. My point is this: The law, which came 430 years later, does not invalidate a covenant previously established by God and thus cancel the promise. For if the inheritance is based on the law, it is no longer based on the promise; but God has graciously given it to Abraham through the promise. Why, then, was the law given? It was added for the sake of transgressions until the Seed to whom the promise was made would come. The law was put into effect through angels by means of a mediator. Now a mediator is not just for one person alone, but God is one. Is the law therefore contrary to God’s promises? Absolutely not! For if the law had been granted with the ability to give life, then righteousness would certainly be on the basis of the law. But the Scripture imprisoned everything under sin’s power, so that the promise might be given on the basis of faith in Jesus Christ to those who believe. Before this faith came, we were confined under the law, imprisoned until the coming faith was revealed. The law, then, was our guardian until Christ, so that we could be justified by faith. But since that faith has come, we are no longer under a guardian, for through faith you are all sons of God in Christ Jesus. For those of you who were baptized into Christ have been clothed with Christ. There is no Jew or Greek, slave or free, male and female; since you are all one in Christ Jesus. And if you belong to Christ, then you are Abraham’s seed, heirs according to the promise.”

Introduction

If I asked you to raise your hand if you're a good person, most of us wouldn't. We know ourselves too well. We know the thoughts we've thought, the words we've said, the things we've done when no one was watching.

But here's the strange thing. If I asked a different question—"Do you think you'll go to heaven when you die?"—many of us would say yes. And then, if we were honest, we'd start listing reasons. I try to be a good person. I go to church. I help people when I can. I don't do the really bad stuff.

Do you see what we just did? We became accountants of our own righteousness. We mentally opened a ledger and started tallying columns. Attended church. Check. Gave to the poor. Check. Didn't murder anyone. Check. Didn't commit adultery. Check.

And then we presented that ledger to God and expected Him to sign off on it.

Here's the problem: that's not Christianity. That's moral bookkeeping. And the apostle Paul says in Galatians that kind of thinking actually misses the entire point of the gospel.

See, Paul was writing to a church that had been seduced by a counterfeit gospel. Some teachers had come in and told them, "Faith in Jesus is a great start. But if you really want to be secure, you need to add something. You need to keep the law. You need to be circumcised. You need to follow the rules."

And Paul doesn't just correct them gently. He's astonished—that's his word in Galatians 1:6. He can't believe they would abandon the true gospel for a fake one.

So in chapter 3, he takes them back to Abraham. Abraham lived 430 years before the law of Moses was even given. And yet the Bible says Abraham was declared righteous. How? Not by keeping the law—it didn't exist yet. Abraham was declared righteous because he believed God. That's it. He trusted God, and God credited that trust as righteousness.

So that raises a massive question. If Abraham was saved by faith 430 years before the law, why did God give the law at all?

Paul answers: the law was never meant to save you. It was meant to show you that you need to be saved. The law is like a mirror. When you look in a mirror and see dirt on your face, the mirror didn't put the dirt there. It just revealed what was already true. The law doesn't make you a sinner. It shows you that you are one.

Paul calls the law a guardian—a strict, disciplining servant whose job was to lead us to Christ. But here's the good news: once faith has come, we are no longer under that guardian. We are sons and daughters. We are heirs.

Moral bookkeeping says, "I'll keep the rules, I'll earn my place, I'll make God owe me."

But the gospel says, "You are already a child of God. Not because of your ledger. But because of what Christ has done."

Christ became a curse for us. He took the penalty we deserved. And in return, He gives us the blessing of Abraham—the promise of the Spirit, received through faith.

So when you stand before God, you don't present your moral bookkeeping. You don't hand Him a list of your good deeds and hope they outweigh the bad. You present Christ. And the Father looks at you and says, "You are My child. You are an heir. You are clothed in the righteousness of My Son."

That's not moral bookkeeping. That's grace. And if you try to mix the two—if you try to add your efforts to Christ's finished work—you don't improve the gospel. You nullify it.

Let's look at what Paul says in Galatians 3:15–29.

1: The Promise Is Older and Stronger Than the Law (vv. 15–18)

Point Statement: The promise God made to Abraham came first—and the law that came later cannot cancel what grace has already given.

Scripture (CSB):

"Brothers and sisters, I'm using a human illustration. No one sets aside or makes additions to even a validated human will... The law, which came 430 years later, does not invalidate a covenant that was previously established by God and thus cancel the promise." (vv. 15, 17)

Explanation & Exegesis: Paul leans on a simple legal analogy every Roman citizen understood—a last will and testament (Greek: diatheke). Once it's validated and sealed, you cannot add conditions or amend it later. God made a covenant of pure, unconditional promise to Abraham 430 years before the Law of Moses was ever given. The law didn't arrive to improve, replace, or override the promise. The promise was always about grace through faith—Abraham believed God, and it was credited to him as righteousness (Gen. 15:6). Paul's point is devastating to the Judaizers: you cannot add law-keeping to a promise-based covenant and call it the same thing. Either it's a gift, or it's a wage. It cannot be both (v. 18).

Illustration: There was a man named Henry who had one grandson named Sam. Henry loved Sam deeply. And when Henry passed away, his will was read. It said, simply and clearly: "I leave everything I have—my house, my savings, my land—to my grandson, Sam."

It was a gift. A promise. Sam didn't earn it. He didn't work for it. He didn't even know it was coming. He just received it. The will was signed, sealed, and legally binding.

Now, Henry had a nephew named Arthur. Arthur was a bit of a busybody. He showed up a few weeks after the funeral, holding a copy of the will, and he said to Sam, "Listen, I know what my uncle wrote. But I think we need to be reasonable here. This is a lot of money. You can't just get it for free. That's not how life works. So here's what I'm going to do. I'm going to add a condition. You need to come over to my house every Saturday for a year and mow my lawn. If you do that, then you can have the inheritance."

Sam was confused. He said, "But my grandfather already gave me the inheritance. His will is clear. There are no conditions."

Arthur folded his arms. "I know what the will says. But I'm just saying—if you really want it, you should earn it. Mow my lawn. Prove you deserve it."

Now, think about this for a moment. If Sam went out and mowed Arthur's lawn for a year, would he be earning the inheritance? Could a timesheet and a lawnmower turn a gift into a wage?

No. Of course not.

The inheritance was already his. It was a gift from his grandfather. Arthur had no authority to add conditions. Arthur's opinion didn't change the will. The only thing Arthur could do was confuse Sam into thinking he needed to earn what had already been freely given.

Application:

Stop treating your relationship with God like a transaction. When you sin, don't run to rule-keeping to fix it—run to the promise.

Examine your heart this week: Do you believe God loves you more when you perform well, and less when you fail?

Action step: The next time you feel guilty, instead of saying "I need to do better," say out loud, "I need the promise."

Transition:

"So if the promise is older and stronger than the law, then what was the law even for? Paul knows you're asking that question. And he answers it directly in the next few verses."

2: The Law Was a Guardian, Not a Savior (vv. 19–24)

Point Statement: The law wasn't given to save you—it was given to show you that you need a Savior.

Scripture (CSB):

"Why then was the law given? It was added because of transgressions until the seed to whom the promise was made would come... The law, then, was our guardian until Christ, so that we could be justified by faith." (vv. 19, 24)

Explanation & Exegesis: The Greek word translated "guardian" is paidagogos—a household slave, often a trusted servant, assigned to supervise a child from about age six to adulthood. This wasn't a teacher in the modern sense; it was more like a disciplinarian or a chaperone. The paidagogos didn't give the child life or make the child an heir. His job was protective and temporary: keep the child from danger, escort them to school, and enforce discipline until they came of age.

Paul says the law functioned exactly like this. It restrained sin (by showing consequences), it revealed sin (by defining what transgression even is, v. 19), and it showed us our desperate need for something the law could never provide. Verse 22 uses a stunning image: Scripture has "imprisoned everything under sin." The law locks us in a cell so we'll stop trying to pick the lock ourselves and wait for the only One who holds the key. The law could diagnose the disease, but it could never cure it.

Illustration Placeholder: Tell the story of Quinn from VHS. Use this story to help guide it.

There was a high school student named Mia who was struggling in her math class. Her parents noticed she was falling behind, so they hired a tutor named Mr. Chen.

Mr. Chen was patient, but he was also honest. He gave Mia a practice test on the first day. It covered everything she'd been learning that semester. Mia sat down, pencil in hand, and she did her best. But when she finished, the page was covered in red marks. She'd gotten most of the answers wrong.

Mia looked at the test and felt crushed. She said, "Mr. Chen, I think I'm failing. I think I'm stupid."

Mr. Chen didn't smile. He said, "Mia, let me ask you a question. Did I give you this practice test to make you feel bad? Did I give it to you to fail you?"

She shrugged. "Well, I did fail."

"No," he said. "You didn't fail. You took a diagnostic test. The test wasn't the point. The test was meant to show you exactly where you need help. See these red marks? Every one of them is a place where I'm going to work with you. Every wrong answer is a roadmap for what we're going to fix together."

He leaned forward. "The test wasn't the destination. It was a direction-corrector. It wasn't there to condemn you. It was there to lead you to me."

And here's the thing. Mia didn't spend the rest of the year trying to earn her tutor's approval by getting a perfect score on every practice test. No. She trusted Mr. Chen. She showed up. She let him teach her. And when the final exam came, she passed—not because she'd mastered the diagnostic test on her own, but because she'd let her tutor lead her to the answers.

Application:

Stop expecting the law (or rules, or religious performance) to give you life. It was never designed to.

Use the law the way God intended—as a mirror that shows you your need for grace. When you read the Ten Commandments, don't think "I need to try harder." Think "I need a Savior."

Sub-point: This doesn't mean the law is bad. It means the law is limited. It can diagnose, but it can't heal. It can point to the cure, but it can't administer it.

Action step: This week, read one of the Ten Commandments each day. After you read it, don't make a resolution. Instead, pray: "Lord, I break this commandment. I need Christ to fulfill it for me."

Transition:

"So the law was never the final word. It was always pointing forward to Someone who would come. And when He came, everything changed. Paul says faith in Christ doesn't just forgive you—it redefines you."

3: Christ Gives You a New Identity (vv. 25–29)

Point Statement: In Christ, you are no longer a prisoner of the law—you are a child of God and an heir of the promise.

Scripture (CSB):

"For you are all sons of God through faith in Christ Jesus. For those of you who were baptized into Christ have been clothed with Christ. There is no Jew or Greek, slave or free, male and female; since you are all one in Christ Jesus. And if you belong to Christ, then you are Abraham's seed, heirs according to the promise." (vv. 26–29)

Explanation & Exegesis: Paul stacks three powerful images to demolish the Galatians' performance-based thinking.

First — Sons of God (v. 26). In Roman law, a huios (son) had full legal standing as an heir. Daughters could inherit, but sons were the legal category Paul uses to emphasize full rights. Every believer—male and female—has this status. You don't graduate into it. You receive it by faith.

Second — Clothed with Christ (v. 27). This is a baptismal image. In the early church, converts would take off their old garments, descend into the water, and emerge to put on a new white robe. Paul says you are "wrapped up" in Christ's identity. When God the Father looks at you, He sees His Son. Your sin is covered. His righteousness is yours.

Third — One in Christ (v. 28). This is not a claim that social categories vanish in the church. Jewish/Greek distinctions still existed. Slave/free was still a real social reality. Male/female was still God's created order. What Paul says is that NONE of these categories determine your standing before God. The ground is level at the foot of the cross. You don't need to become a Jew to be saved. You don't need to be free. You don't need to be male. The only thing that matters is belonging to Christ.

And the result (v. 29)? If you belong to Christ, you are Abraham's seed—not biologically, but spiritually. You inherit every promise God made to Abraham. The covenant was never just for ethnic Israel. It was always for everyone who would believe.

Application:

Your identity is not in your performance, your past, your ethnicity, your social status, or your gender. It's in Christ alone.

Stop living like an orphan. You have a Father. You have an inheritance. You belong.

Let this change how you see other believers—they're not competitors, they're family. The person sitting three pews away who is different from you? You have the same Father and the same inheritance.

Sub-point: If you're struggling with insecurity, shame, or the need to prove yourself, come back to this: you are clothed with Christ. God sees His Son when He looks at you.

Action step: Write down one area where you still try to earn God's approval, and this week, pray specifically about resting in Christ's finished work instead of your performance.

Closing

"Brothers and sisters, the law was a guardian. It kept us safe. It showed us our sin. It pointed us to Christ.

But the guardian's job is done.

The Son has come.

And if you belong to Christ, you are not a prisoner anymore. You are not an orphan. You are not an outsider. You are not a second-class citizen.

You are a child of God.

You are clothed with Christ.

You are an heir of the promise.

Don't go back to the guardian. Don't go back to the prison. Don't go back to earning what's already been given. The promise is yours. The inheritance is yours. Not because you kept the rules—but because Christ kept them for you, and you are in Him.

So stop trying to prove yourself. Start living as who you already are: a child of God, redeemed by Christ, not by the law."

Call to Response

"Here's what I'm asking you to do this week. Take a piece of paper—or open a note on your phone—and write down one area of your life where you tend to slip back into trying to earn God's approval. Maybe it's your parenting. Maybe it's your work ethic. Maybe it's church attendance. Maybe it's a struggle with sin you think makes you disqualified.

Whatever it is, write it down. Then write this next to it:

'I am clothed with Christ. God sees His Son when He looks at me. I am an heir of the promise.'

And here's the concrete step: share that with one other person in this church this week. Text them. Call them. Tell them at coffee. 'This is the area I struggle to trust the promise in. Will you pray for me?'

That's what it means to live as family—not as orphans trying to make it on our own, but as heirs walking together in the freedom Christ bought for us.

Let's pray."