AM 01 February 2026
11 Adoption through the Son Galatians 4’1–7
Introduction – From Bondage to Belovedness
Every person longs to belong, to be known, loved, and accepted. We often seek that security in family, work, the approval of others, or even in our religious performance. But apart from Christ, all such striving leaves us living like servants rather than sons, trying to earn what can only be given by grace.
The Apostle Paul writes to the Galatians because they were forgetting this truth. Having begun by grace, they were being tempted to return to the bondage of the Law, as if God’s favor depended on their obedience. They were slipping from the joy of adoption back into the fear of slavery.
To explain this, Paul uses a picture from everyday life. A child who is heir to a great estate is, for a time, placed under guardians and tutors. Though he is “lord of all,” he lives like a servant until the time set by his father. Paul says this is what God’s people were like under the Law: heirs in promise, but still under discipline, waiting for maturity.
Then, in the fullness of time, God sent forth His Son to redeem slaves and make them sons. By Christ’s work, and by the Spirit crying “Abba, Father” in our hearts, we are brought from bondage into sonship.
This is the heart of the gospel: the Son became man that slaves might become sons.
As we turn to Galatians 4:1–7, Paul will show us our former slavery, God’s gracious sending of the Son, the Spirit’s witness of adoption, and the glorious result: we are no longer slaves, but sons and heirs through God. Let us hear how our Father has made us His own in Christ, and learn to live as His children.
Transition to Point I – The Heir in Bondage
To help us understand the wonder of our adoption, Paul first takes us back to what we once were. Before we can grasp the glory of being sons, we must remember the misery of being slaves. The Father’s grace shines brightest against the backdrop of our former bondage.
So Paul begins, not with heaven’s inheritance, but with the nursery and the schoolroom—with the image of a young heir still under tutors and managers, waiting for his father’s appointed time. In that picture we see the spiritual condition of the whole human race before Christ came: heirs by promise, yet still bound; loved by the Father, yet not yet free.
Let us then follow the apostle as he opens this illustration in verses 1–3, and shows us the heir in bondage.
I. The Heir in Bondage (4:1–3)
Paul begins with a picture from everyday life. In the Roman world, a son, though heir to everything, lived under guardians and stewards until the time set by his father. Though “lord of all,” he had no freedom and lived like a servant. In the same way, God’s people were heirs of promise, yet still minors under the custody of the Law. Sinai was not rejection, but schooling. Israel was not disowned, but disciplined, kept under restraint until maturity.
This is what Paul means by being “enslaved to the elementary principles of the world.” The στοιχεῖα were the basic religious ordinances of the old covenant. They were good in their time, but they were shadows, not the substance.
This childhood condition describes not only Israel, but all humanity outside of Christ. Gentiles were enslaved to idols; Jews were bound by a law they could not keep. Both lived in fear, trying to earn what could only be received. Our slavery was real and inward; we needed not merely instruction, but redemption.
Here is the wonder: Christ Himself entered this bondage for us. The eternal Son placed Himself under the Law, obeyed it perfectly, and bore its discipline. He took the place of the enslaved heir so that we might come of age through Him. The free One became a servant, that servants might become sons.
Beloved, this is where we once were: under sin and condemnation, able to keep rules but not produce righteousness. Do not return to that bondage. To go back to the tutor after graduation is folly. Live no longer as fearful servants, but as beloved children.
And this is where Paul now turns: the Father did not leave His children under guardians forever. When the appointed time came, He acted. “But when the fullness of time had come, God sent forth His Son.” Let us now behold the Father’s gracious sending and the Son’s redeeming work.
II. The Father’s Sending and the Son’s Redemption (vv. 4–5)
Paul now points us to the great turning point of history: “When the fullness of time had come.” This means the moment appointed in the Father’s eternal plan. God had been preparing the world through the Law, the prophets, and His providence, but Paul gives the credit to God alone: “God sent forth His Son.” History is not random. Just as the father set the date for the heir, so God set the day when the true Heir would appear.
Christian, the same Father who ordered the timing of Christ’s coming orders your life. He is never late. Trust His clock.
“God sent forth His Son, born of woman, born under the Law.” The Son did not begin in Bethlehem; He was sent. This speaks of His pre-existence and His mission. “Born of woman” declares His true humanity. He entered our weakness and fulfilled the promise of the seed of the woman. “Born under the Law” declares His willing submission to the Law’s demands. He obeyed it perfectly and bore its curse. The Lawgiver placed Himself under the Law so that lawbreakers might be made righteous.
The purpose is twofold: “to redeem those who were under the Law, that we might receive adoption as sons.” To redeem is to buy out of slavery at a price, and that price was the blood of Christ. But freedom is not the end. He did not merely open the prison door; He brought us into the Father’s house. Adoption means a new status, a new name, and a new inheritance. In Christ, the slave becomes a son, and the son becomes an heir.
This adoption rests on Christ’s own sonship. He is Son by nature; we are sons by grace. What is His by right becomes ours by gift.
Beloved, this is not just doctrine, but identity. If you are redeemed, do not live as though still a slave. If you are adopted, do not fear as though God were a harsh master. You obey now not to earn love, but because you are loved. The slave obeys for wages; the son obeys out of affection.
So Paul moves on. The Father sent the Son to accomplish redemption, and now He sends the Spirit to make that sonship real in our hearts: “And because you are sons, God has sent the Spirit of His Son into our hearts, crying, ‘Abba, Father.’” Let us now consider the Spirit of adoption.
III. The Spirit of Adoption (v. 6)
“And because you are sons, God has sent the Spirit of His Son into our hearts, crying, ‘Abba! Father!’”
Paul now speaks of a second great sending. First, God sent His Son into the world to accomplish our redemption. Now He sends the Spirit into our hearts to assure us of it. This is the work of the Triune God: the Father plans, the Son accomplishes, and the Spirit applies. Redemption is not only a change of status but the entrance of new life within us. The Spirit is given not so that we might become sons, but because we already are sons.
He is called “the Spirit of His Son” because He is the very Spirit who filled and empowered Christ. To receive the Spirit is to share in the Son’s own relationship with the Father. The risen Christ continues His life in His people by His Spirit.
The Spirit comes crying, “Abba, Father.” This is not a cold formula but the deep cry of the heart. The word “Abba” is the same word Jesus used in His own prayer. By the Spirit, we are taught to speak to God with the same filial confidence as the Son Himself. This is the experiential side of adoption: what the Father decreed and the Son secured, the Spirit makes real in the heart.
As Paul says elsewhere, the Spirit bears witness with our spirit that we are children of God. This witness gives peace, strength in trial, and hope even in death. The Spirit does not make us sons; He enables us to live as sons, with confidence and joy.
Beloved, do not return to servile fear. You are not a slave, but a child. Let your obedience spring from gratitude, not guilt. When accusations come, answer them with this: God has sent His Spirit into your heart. How could He reject the one in whom He dwells?
In worship, in suffering, and in temptation, remember who you are. The Father disciplines sons, not slaves. The family likeness should be seen in your life.
Here is the beauty of grace: the Father sent the Son, redemption is accomplished; the Father sent the Spirit, redemption is applied; and by the Spirit we cry, “Abba, Father.” We have come of age in Christ, and the mark of our maturity is not fear, but filial joy.
Transition to Point IV
The Spirit’s cry within completes the inner work of adoption. Yet Paul has one more note to sound—the glorious consequence of all that God has done. If the Father has sent His Son to redeem, and His Spirit to assure, then our status has changed forever. We are heirs—heirs of God and joint-heirs with Christ.
Let us therefore hear Paul’s concluding triumph in verse 7:
“So you are no longer a slave, but a son, and if a son, then an heir through God.”
IV. The Heir of God (v. 7)
“So you are no longer a slave, but a son, and if a son, then an heir through God.”
1. The Logical Conclusion of Grace
The little word ὥστε (“so then”) gathers up all that Paul has said and drives it home. It is the therefore of redemption, the logic of love.
- You were slaves under the Law — but God sent His Son to redeem you.
- You were orphans without assurance — but God sent His Spirit to dwell in you.
- Therefore, says Paul, you are no longer a slave, but a son; and if a son, then an heir through God.
Here the apostle’s argument blossoms into doxology. The entire Trinitarian movement—Father sending the Son, Father sending the Spirit—leads to this final identity: the believer as heir of God Himself.
This is the gospel’s climax: not only pardon for sin, not only freedom from bondage, but participation in the Father’s own inheritance. The Son of God became man not merely to free us, but to enrich us—to share His own filial privilege with those who once were rebels.
2. The Meaning of “Heir” in Paul’s World
In Roman culture, adoption conferred not only the father’s name but the father’s estate. It was irreversible; the adopted son became as truly heir as any natural-born child—indeed, often more secure, for the father had chosen him. So when Paul says, “heir through God,” he declares that every believer possesses an unalterable claim upon the Father’s kingdom, grounded not in birthright but in grace.
This was revolutionary. A Gentile slave in Galatia, hearing these words, could scarcely imagine such dignity. The gospel took the lowest and seated them with princes in God’s household.
“If children, then heirs—heirs of God and fellow heirs with Christ.” (Rom. 8:17)
Christ’s Fulfillment Woven In
Christ Himself is the true Heir—the “firstborn over all creation” (Col. 1:15), the One to whom the nations are given as His inheritance (Ps. 2:8).
By union with Him, we share in all that is His.
- His righteousness is our robe.
- His resurrection is our life.
- His kingdom is our inheritance.
We are not mere beneficiaries; we are co-heirs with the Elder Brother. What belongs to the Son by nature belongs to us by adoption. We inherit through God—that is, by His initiative, through His Son, and in His Spirit.
3. The Nature of the Inheritance
What, then, do we inherit? Scripture answers in three dimensions:
a. A Present Inheritance – Fellowship with God
Already we enjoy the privilege of access to the Father. Adoption is not postponed until heaven; it is the believer’s present possession.
Every prayer whispered, every comfort felt, every assurance of pardon is a foretaste of glory. Eternal life has already begun within us.
b. A Future Inheritance – Glory with Christ
Peter calls it “an inheritance incorruptible, undefiled, and unfading, kept in heaven for you” (1 Pet. 1:4). One day the sons of God will be revealed; the whole creation will share their liberty (Rom. 8:19–21). Our inheritance is the new creation itself—Christ reigning, His people glorified, His Father all in all.
c. The Supreme Inheritance – God Himself
Psalm 16:5 says, “The LORD is my chosen portion and my cup.” To be an heir of God means that God Himself is our portion. Heaven’s greatest joy is not the streets of gold but the face of the Father. What Christ prayed in John 17—“that they may be with Me where I am, to see My glory”—will be fulfilled for every child of God.
4. Exhortation: Live as Heirs, Not as Hired Servants
Beloved, if this is true—if you are sons and heirs—then let the dignity of your calling shape the humility of your conduct.
a. Live in Assurance, Not Anxiety
Do not question the Father’s love as though it depended on your performance. Roman adoption could not be undone; neither can divine adoption. The Father does not change His mind about His children. Christ’s blood has sealed your papers; the Spirit’s witness confirms them.
When guilt whispers, “You are still a slave,” answer, “No, I am a son.” When fear says, “You will be cast out,” answer, “I am an heir.”
b. Live in Holiness, Not Hypocrisy
An heir bears the family likeness. The Father’s name is upon you; do not dishonor it. Holiness is not a way to earn inheritance, but the way the family behaves. Live as befits a son of the King—pure in heart, generous in spirit, steadfast in truth.
c. Live in Hope, Not in Despair
Your inheritance is certain though unseen. Earthly treasures vanish; this one endures. Every trial, every tear is preparing you for the day when you will receive it in full. Lift your eyes beyond the momentary afflictions to the weight of glory prepared for you (2 Cor. 4:17).
d. Live in Love within the Household
Every believer who calls God “Father” is your brother or sister. Let the spirit of rivalry die; heirs need not compete. Serve one another as family, for the Father’s house is large enough for all His children.
5. Christ’s Example: The Elder Brother Who Shares His Estate
Consider how different our Elder Brother is from those of old.
Cain envied Abel and slew him.
The prodigal’s brother resented his return.
But Christ rejoices to share His inheritance.
He prays, “Father, the glory You have given Me I have given to them.” (John 17:22)
He delights to have many brothers brought to glory (Heb. 2:10–12).
He will never keep for Himself what His blood has purchased for His people.
Here is grace beyond measure: the Heir makes slaves His co-heirs; the King makes beggars princes; the Beloved Son makes rebels children of His Father.
6. Application – Marks of Living as Heirs
How shall we show that we are indeed heirs of God?
- Grateful Worship: Praise the Father for the costly adoption purchased by the Son.
- Confident Prayer: Approach the throne not with trembling but with filial joy.
- Patient Endurance: Receive discipline as training for reigning (Heb. 12:7).
- Generous Stewardship: If you are rich in Christ, hold lightly the things of earth.
- Evangelistic Zeal: Invite others into this family; the Father’s house still has room.
7. Summary and Transition to Conclusion
Here, then, is the gospel in one verse:
- From slavery to sonship,
- From bondage to belovedness,
- From fear to fellowship,
- From earthly poverty to heavenly inheritance.
You are no longer a slave, but a son—and if a son, then an heir through God.
The Father has planned it, the Son has purchased it, the Spirit has assured it. What remains is to live in it—with faith, with joy, and with holy boldness.
Transition:
And so Paul ends where the gospel begins: in the gracious heart of the Father. From slavery to sonship, from fear to freedom, from servants to heirs—that is the story of every believer. Let us therefore live as the children of God, walking in the liberty of grace, the intimacy of prayer, and the hope of inheritance.
In the words of John, “Behold what manner of love the Father hath bestowed upon us, that we should be called the sons of God.”
Conclusion – From Bondage to Belovedness
- Do you see the movement of grace?
Do you see the order?
- From the Law’s bondage to the Son’s redemption.
- From redemption accomplished to adoption received.
- From adoption declared to adoption experienced by the Spirit.
- From childhood to maturity, from fear to freedom, from slavery to sonship.
The story begins in bondage and ends in belovedness; it begins with commandment and ends with communion.
The Father’s purpose is not simply to have servants who obey Him, but children who love Him.
2. The Cross at the Center
Remember what made this possible:
Christ, the true Son, entered the slave market of sin.
He bowed beneath the tutor’s rod, bore the curse of the Law, and paid the ransom price.
The innocent was treated as the guilty, that the guilty might be treated as sons.
He was forsaken—“My God, My God”—that we might forever say, “Abba, Father.”
In His cry of dereliction, our cry of adoption was born.
Every time you pray, every time you sing “Our Father,” every time peace floods your heart, it is because of His cross.
3. The Spirit’s Cry and the Believer’s Confidence
The Holy Spirit now makes that redemption a living reality.
He teaches our hearts to speak heaven’s language.
When fear silences you, the Spirit cries.
When guilt condemns you, the Spirit assures.
When suffering confuses you, the Spirit comforts.
He will not cease His witness until you stand before the Father face to face.
Let that truth drive away despair.
You are not abandoned; you are indwelt.
You are not an orphan; you are adopted.
You are not a slave trying to please your master; you are a son loved by your Father.
4. The Heir’s Hope
And this sonship is not the end but the beginning.
The Spirit who dwells within you is the pledge of an inheritance yet to come — resurrection, renewal, and eternal glory.
Creation itself waits for the revealing of the sons of God.
One day the family will be gathered home, the Father’s house filled, and the children’s cry of “Abba” will become everlasting praise.
“He who did not spare His own Son but gave Him up for us all, how will He not also with Him graciously give us all things?” (Rom. 8:32)
That is the logic of adoption: if the Father has given His Son, He will withhold nothing else.
5. The Call to Live as Sons
So, beloved, live as who you are.
Do not crawl through life as a slave when God has made you a son.
Do not obey to earn favor; obey because you already have it.
Do not shrink from the Father’s presence; His Son opened the way.
Do not doubt your inheritance; His Spirit guarantees it.
Walk in the liberty of grace, the intimacy of prayer, the holiness of the family likeness, and the hope of glory.
Let every day be lived in gratitude that the Father has called you His own.
“Behold what manner of love the Father has bestowed upon us, that we should be called the sons of God; and so we are.” (1 John 3:1)
6. Closing Appeal
Perhaps you have lived long under the shadow of performance — trying to prove your worth before God, afraid you have failed Him once too often.
Hear the gospel again: the Father does not adopt servants who have earned a place; He adopts sinners whom the Son has redeemed.
Come, then, as a child. Trust the Son who was born of woman and born under the Law for you. Receive the Spirit who makes your heart cry, “Abba.”
Enter the joy of belonging.
For through Jesus Christ you are no longer a slave, but a son, and if a son, then an heir through God.
Closing Prayer
Almighty and most gracious Father,
We praise You for the love that sent Your Son into the world and Your Spirit into our hearts.
Thank You for redeeming us from bondage and calling us Your sons and daughters.
Grant that we may live in the freedom of Your grace, in the intimacy of Your presence, and in the hope of the inheritance You have prepared.
Make us more like our Elder Brother, Jesus Christ, until that day when we stand before You in glory and cry with all the redeemed, “Abba, Father.”
Through Jesus Christ our Lord. Amen.