The Spirit of Adoption in Romans 8:15

Question 4140

In Romans 8:15 Paul tells believers that they have not received a spirit of slavery leading back into fear, but the Spirit of adoption by whom they cry, Abba, Father. The phrase Spirit of adoption describes the Holy Spirit in His work of bringing the believer into the family of God and making the reality of that new relationship felt in the heart. To be indwelt by the Spirit of adoption is to be brought from the status of a frightened slave into the freedom and confidence of a beloved child.

Paul sets this glorious word against its dark opposite, the spirit of slavery that produces fear, and the contrast tells us a great deal about what the gospel actually does to a person.

Adoption in the ancient world

The word adoption, in Greek huiothesia, means literally the placing of a son. In the Roman world of Paul’s readers, adoption was a formal legal act by which a person was taken into a family and granted the full standing of a natural-born heir. An adopted son received the family name, came under the authority and protection of the father, and shared in the inheritance. The act was permanent and could not be undone by the adopting father.

Paul draws on this rich background to describe what God does for the believer. We were not born into His family by nature, for by nature we were children of wrath. By the gospel we are taken in, given the standing of true sons and daughters, and made heirs of God. The Spirit of adoption is the One who applies this new standing to us and assures us that it is real.

From the spirit of slavery to the Spirit of adoption

Paul draws a sharp contrast. The believer has not received a spirit of slavery to fall back into fear. The picture is of a slave who lives in dread of the master, who obeys out of terror rather than love, and who has no settled place in the household. That is what religion becomes when it is built on fear, an anxious attempt to appease a God who is felt to be distant and severe.

Against this Paul sets the Spirit of adoption. The God revealed in the gospel is not a slave master to be feared but a Father to be loved. The Spirit who indwells the believer does not reinforce the old dread but replaces it with the confidence of a child who is sure of being loved. The change from slavery to sonship is not a change in how hard we work but a change in the whole basis of our relationship with God.

Crying Abba, Father

The Spirit of adoption produces a particular cry, Abba, Father. Abba is an Aramaic term of warm, intimate address, the word a child would use of a beloved father within the family. It is the very word Jesus used in Gethsemane when He prayed, Abba, Father, all things are possible for you. That the same word is now placed on the lips of believers shows how completely we have been brought into the family.

The verb Paul uses, krazo, to cry out, suggests a deep and heartfelt expression rather than a formal recitation. The Spirit does not merely teach us the right title for God; He stirs within us a genuine affection that reaches out to God as Father. When a believer prays Father and means it from the heart, that prayer is itself the work of the Spirit of adoption, evidence that the family relationship is real.

The Spirit of adoption and assurance

Romans 8:15 leads directly into the verse that follows, where the Spirit Himself bears witness with our spirit that we are children of God. The two verses belong together. The Spirit of adoption not only makes us sons; He assures us that we are sons. He works in us both the new standing and the conscious enjoyment of it.

This means that Christian assurance is bound up with our experience of God as Father. Where the Spirit is at work, there grows a settled confidence that we are accepted, loved, and secure in the family of God. This assurance does not rest on our performance, which would only return us to the fear of the slave, but on the Father’s gracious act of adoption, which cannot be reversed. We develop this link in our article on how the Spirit bears witness with our spirit, and on the wider Spirit’s role in assurance.

Heirs of God

Paul does not stop at sonship but presses on to inheritance. If children, then heirs, heirs of God and fellow heirs with Jesus. The Spirit of adoption who brings us into the family also guarantees our share in the family inheritance. The Spirit is described elsewhere as the down-payment, the arrabon, of our inheritance, a first instalment that pledges the full sum to come.

This casts present suffering in a new light. Paul immediately adds that we are heirs provided we suffer with Jesus in order that we may also be glorified with Him. The hardships of the Christian life are not evidence that we have been forgotten by our Father but the path by which His children come into their inheritance. The Spirit who assures us of our sonship also sustains us through the suffering that precedes the glory.

A relationship, not a performance

The doctrine of adoption guards the believer against two opposite errors. It guards against the legalism that turns the Christian life into an anxious effort to earn what has already been freely given, returning us to the spirit of slavery Paul warns against. It also guards against a careless presumption, for a true child loves the Father and longs to please Him, not to secure acceptance but because acceptance is already sure.

The Spirit of adoption holds these together. He frees us from fear and at the same time fills us with love for the Father whose name we now bear. The Christian life, rightly understood, is the life of a child living in the security of the Father’s house, served not by a hired servant’s dread but by a son’s glad devotion. For the broader pattern of how the Spirit comes to indwell us, see our article on when we receive the Holy Spirit.

The Spirit of adoption and the future

The work of the Spirit of adoption reaches forward to a glory not yet revealed. Paul says later in Romans 8 that we wait eagerly for our adoption as sons, the redemption of our bodies. The sonship the Spirit gives us now is real and complete in standing, yet its full enjoyment lies ahead. The Spirit of adoption is the firstfruits of that harvest, the first instalment of an inheritance that will one day be ours in full.

This gives the believer a particular way of facing the frustrations of the present age. We groan, along with a creation subjected to futility, but we groan as those who already have the Spirit and therefore already belong to the family. The Spirit of adoption within us is the pledge that the groaning is not the end of the story and that the children of God are being brought toward the freedom of glory.

So adoption is at once a present possession and a future hope. We are children now, and we shall be revealed as children then, when the Father brings His many sons to glory. The Spirit who sealed us is the guarantee that the day will surely come. Until that day the same Spirit who first brought us into the family keeps us within it, so that nothing we face in this present age can undo the standing the Father has freely given to His own.

So, now what?

If you have trusted Jesus, then the Spirit of adoption lives in you, and you are a child of God in the fullest sense. You are not a slave hoping to be tolerated by a stern master. You are a son or a daughter, brought into the family by a Father who chose to place you there and who will not turn you out.

Let this reshape the way you come to God. When fear creeps back and you find yourself relating to God as though you had to earn His favour, remember that you have not received a spirit of slavery. Come to Him as Father, with the freedom the Spirit gives, and let the cry of Abba rise honestly from your heart.

And let your assurance rest where it belongs. You are an heir of God and a fellow heir with Jesus, sealed by the Spirit until the day you come into your inheritance. Whatever you suffer now, you suffer as a beloved child on the way to glory, kept by the same Spirit who first brought you home.

“For you did not receive the spirit of slavery to fall back into fear, but you have received the Spirit of adoption as sons, by whom we cry, “Abba! Father!”” Romans 8:15