Book Study · Week 3 of 5

Children of God, Not Slaves

Galatians 3:26-4:20

Sonship and inheritance

Main Point

We are children of God, not slaves or servants. The Spirit of God's Son dwells in us, enabling us to cry out 'Abba, Father.' This identity transforms everything.

Application Ideas

The Galatians were returning to slavery mentality after experiencing freedom. Many believers live as spiritual orphans rather than God's adopted children. This week, meditate on the reality that you are God's beloved child. How would your decisions change if you lived from this identity?

Discussion Questions

What does it mean that we are 'heirs according to the promise'? Why does Paul say the law was like a tutor and we are no longer under it? How does the cry 'Abba, Father' demonstrate intimacy with God?

Detailed Sermon Outline

Primary Text: Galatians 3:26-4:20

Supporting Texts: Romans 8:14-17; John 1:12-13; Ephesians 1:3-8

Big Idea: You are God's child, not His servant — the Spirit of His Son in you cries Abba, Father, and that identity changes everything.

Target Length: 35-40 minutes

Introduction

Paul has argued that the law cannot justify. Now he turns from the courtroom to the family, and the temperature of the letter changes. This is the most tender passage in Galatians.

He is writing to people who had tasted freedom and were sliding back into a servant's mindset — anxious, measuring, hoping to be kept on. That slide is not an ancient problem.

The main point: the gospel does not merely clear your record. It makes you a son or daughter of God.

I. One Family, No Second Class (Galatians 3:26-29)

Four verses that would have startled the ancient world and still unsettle ours.

'In Christ Jesus you are all children of God through faith.' All of you — the phrase is deliberate, and it is aimed at anyone drawing an inner circle.
'There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus.' The categories that ranked people do not rank them here.
'If you belong to Christ, then you are Abraham's seed, and heirs according to the promise.' Not attached to the family. Heirs of it.

Paul is not erasing difference. He is removing it as a basis for standing before God, which is exactly what the false teachers were trying to reintroduce.

II. From Slave to Son (Galatians 4:1-11; Romans 8:14-17)

Then an illustration from inheritance law. A child who will one day own the estate is, while under age, 'no different from a slave' — supervised, restricted, waiting.

'When the set time had fully come, God sent his Son, born of a woman, born under the law, to redeem those under the law.' The purchase and the purpose in one sentence.
'That we might receive adoption to sonship.' Adoption in that world was legally irreversible and carried full inheritance. Paul chose the word on purpose.
'God sent the Spirit of his Son into our hearts, the Spirit who calls out, Abba, Father.' The evidence of the new standing is an instinct — the impulse to call God Father.

'So you are no longer a slave, but God's child; and since you are his child, God has made you also an heir.' Then the ache: 'How is it that you are turning back to those weak and miserable forces?' Nobody chooses slavery on purpose. We just return to what we know.

III. A Pastor's Heart (Galatians 4:12-20)

The last section is not argument at all. It is Paul remembering his first visit and pleading with them, and it is worth preaching for its tone alone.

'It was because of an illness that I first preached the gospel to you.' His arrival was not strategy; it was weakness.
'You welcomed me as if I were an angel of God, as if I were Christ Jesus himself.' They had loved him. He is asking what happened.
'Have I now become your enemy by telling you the truth?' The cost of honest correction, felt by every pastor who has paid it.

And then the image: 'My dear children, for whom I am again in the pains of childbirth until Christ is formed in you.' He is not defending a position. He is laboring for people he loves.

Conclusion & Appeal

A great many believers live as spiritual orphans. They believe they are forgiven and still act like staff — useful, replaceable, always slightly on probation.

The difference between a servant and a child is not how hard they work. It is what happens when they fail. A servant fears dismissal. A child is still a child.

So this week, pray one sentence at the start of each day, slowly and out loud: Abba, Father. Do not rush past it. The Spirit put that word in your mouth to tell you what you are.