Free in the Son

John told us many believed as Jesus spoke (John 8:30). Now Jesus turns to the men who’d just believed Him, and He doesn’t congratulate them. He tells them what a real disciple looks like.

John 8:31-32 — Remaining in His word

Jesus told them that if they stayed in His word, they’d truly be His disciples, and they’d know the truth, and the truth would set them free (John 8:31-32).

Notice what He doesn’t do. He doesn’t count heads after the sermon and call it a revival. He’s seen crowds believe before, and He didn’t trust Himself to them, because He knew what was in man (John 2:23-25). He’d watched a crowd follow Him across the sea for bread and walk off when the teaching got hard (John 6:26, 60, 66). So He tells these new believers the mark of the real thing. A true disciple stays.

That isn’t a work a man does to earn his place. It’s the evidence of a place God already gave him. The sheep hear the Shepherd’s voice and follow, and nobody snatches them out of the Father’s hand (John 10:27-29). The men who walk away show they were never really part of the company to begin with (1 John 2:19). And the God who started the good work is the One who finishes it (Philippians 1:6). A man stays in Christ’s word because Christ is keeping him there.

And what’s he staying in? His word. Not a feeling from the night he walked the aisle. Not a family name or a church roll. The word of Christ, read and heard and believed and obeyed, day after day. That’s where disciples live (Colossians 3:16) (Psalm 1:2).

Then comes the promise. Stay in it, and you’ll know the truth, and the truth will set you free.

That verse gets carved over library doors and printed on college seals, as if any fact learned in a classroom breaks a man’s chains. That isn’t what Jesus said. The truth He means is Himself and what He teaches. He’s full of grace and truth, and grace and truth came through Him (John 1:14, 17). He’s the truth (John 14:6). The Father’s word is truth, and that word is how He sets His people apart (John 17:17). A man can earn three degrees and die a slave. Freedom comes from knowing the Son.

John 8:33 — We’ve never been slaves

The men bristled. They said they were Abraham’s offspring and had never been anybody’s slaves. So what did He mean, they’d be set free (John 8:33)?

It’s hard to believe they said it with a straight face. Their fathers had made bricks for Pharaoh until God brought them out with a strong hand (Exodus 1:13-14, 20:2). Their fathers had been carried off to Babylon (2 Kings 25:11). Roman soldiers were walking their streets while they talked. But that’s what pride does. It rewrites the family history so it never needed rescuing.

And there’s a deeper blindness under it. They thought being Abraham’s sons settled their standing with God. John the Baptist had already warned against leaning on that (Matthew 3:9). Paul would later say not everybody descended from Israel is Israel, and the true children of Abraham are the ones who share his faith (Romans 9:6-8) (Galatians 3:7).

Don’t laugh at them too fast. A lot of men in church pews are leaning on the same thing with a different name on it. “I was raised in church.” “I was baptized.” “My grandfather was an elder.” None of that sets anybody free.

John 8:34-36 — The slave and the Son

So Jesus answered with a solemn word. Everyone who practices sin is a slave to sin (John 8:34).

He isn’t talking about Pharaoh or Caesar now. He’s talking about the master inside. A man thinks he sins because he’s free to, but every sin he commits tightens the chain. Paul says you’re a slave to whatever you obey, and the wages that master pays out is death (Romans 6:16, 20-23). Peter says a man is a slave to whatever has beaten him (2 Peter 2:19). Every son of Adam starts life in that house, born in sin, and none of us walked out on our own (Psalm 51:5) (Ephesians 2:1-3).

Then Jesus draws a picture from the household. A slave doesn’t stay in the house forever. A son stays for good (John 8:35).

These men knew that picture from their own Bible. Abraham had two sons. The son of the slave woman was sent away, and the son of the promise stayed and got the inheritance (Genesis 21:10, 12). Paul uses the same story to show that the children of the free woman are the ones who belong (Galatians 4:30-31). And Hebrews says Moses was faithful in God’s house as a servant, but Christ is faithful over it as the Son (Hebrews 3:5-6).

Here’s the good news. The Son doesn’t only stay in the house. He brings others in. Jesus told them that if the Son sets them free, they’ll really be free (John 8:36).

That’s the only freedom that lasts. Not reform, where a man trades one master for a cleaner-looking one. Not religion, where a slave dresses up like a son. The Son Himself breaks the chain and adopts the slave. God sent His Son to redeem those under the law so they’d be adopted as sons, and He sent the Spirit of His Son into their hearts so they’d cry out to Him as Father (Galatians 4:4-7) (Romans 8:15). The man the Son sets free isn’t on probation. He’s in the house for good.

And notice who does the freeing. The Son does. The slave doesn’t buy his own papers. Christ gave His life as a ransom for many, and the ones He ransomed are the ones the Father gave Him (Mark 10:45) (John 6:37, 39). A man who’s been set free didn’t talk his master into letting him go. He was bought.

John will show in the next verses what happens when this conversation keeps going, and we’ll walk through that next. For now, sit with the question Jesus put in front of those men. Were they free, or did they just think they were?