Adoption (as son)
Reading a lexicon entry
What this page is: Each lexicon entry shows the original Hebrew or Greek word behind the English translation: its meaning, its range of use, and where it appears in Scripture.
Strong's number: The Strong's code (H- or G-) is the standard reference number for this word. It connects this entry to chapter and passage language tabs.
Where it appears: The witness passages show where this word is used in context. Click any to open the study page for that passage.
This lexicon entry is part of our ongoing editorial review. If you notice missing content, unclear wording, or a possible correction, please send us a note through the Connect page. Screenshots are helpful.
The Greek noun huiothesia is a compound of huios (son) and thesis (placement, a setting-in-position), meaning literally the act of placing someone in the position of a son. It is a legal term from the Greco-Roman world, where adoption was a deliberate formal act by which a person without natural claim to sonship was granted all the rights, privileges, and inheritance of a natural-born son.
Reader summary
Full entry for υἱοθεσία (G5206) · Open the biblical lexicon
The Greek noun huiothesia is a compound of huios (son) and thesis (placement, a setting-in-position), meaning literally the act of placing someone in the position of a son. It is a legal term from the Greco-Roman world, where adoption was a deliberate formal act by which a person without natural claim to sonship was granted all the rights, privileges, and.
The BSB source-word alignment has 5 aligned rows for this entry. Common renderings include adoption as sons (2), [our] adoption as sons (1), adoption as His sons (1), of adoption to sonship (1).
The source-word alignment first shows this entry at Romans 8:15. Its strongest book concentrations include Romans (3), Ephesians (1), Galatians (1).
The Greek noun huiothesia is a compound of huios (son) and thesis (placement, a setting-in-position), meaning literally the act of placing someone in the position of a son. It is a legal term from the Greco-Roman world, where adoption was a deliberate formal act by which a person without natural claim to sonship was granted all the rights, privileges, and inheritance of a natural-born son.
Paul uses it exclusively for the divine act by which God brings believers into his family — not because they are natural children but because he has chosen to place them there through Christ. The local NT index currently counts five G5206 occurrences in the New Testament, all in Paul, and its range is striking: it looks back to Israel's privilege (Rom. 9:4), forward to the resurrection-body redemption that believers still await (Rom.
8:23), And into the present experience of the Spirit crying 'Abba, Father' within the believer's heart (Gal. 4:5-6; Rom. 8:15). The Galatians context is the theological fulcrum: redemption from the law's bondage (exagorazō, Gal. 4:5a) has a specific goal — 'that we might receive our adoption as sons' (Gal. 4:5b). The rescued are not liberated neutrally; they are placed into a new family.
And the proof of adoption is the Spirit, who moves believers to cry out to God as Father — which is the most intimate address in the biblical vocabulary. Huiothesia is thus not a metaphor for closeness with God but a legal-relational reality that changes the identity of those who receive it: they are now sons and heirs.
The local NT index currently counts five G5206 occurrences, all in Paul: Galatians 4:5, Romans 8:15, 8:23, 9:4, and Ephesians 1:5. Each occurrence names a different dimension of the one reality — its basis (Eph. 1:5), its present experience (Rom. 8:15), its future fullness (Rom. 8:23), its OT roots (Rom. 9:4), and its goal within redemption (Gal. 4:5). Together they give the word its full theological contour.
To redeem those under the law, that we might receive our adoption as sons.
The purpose clause makes huiothesia the declared goal of the incarnation and redemption: the Son came under the law in order that those under the law might be placed in the Son's own position as sons. The movement is from slavery to sonship, from bondage to belonging. Adoption is not a secondary benefit of salvation — it is the aim toward which redemption is directed.
And because you are sons, God sent the Spirit of His Son into our hearts, crying out, “Abba, Father!”
The Spirit is the proof and experience of adoption: God sends 'the Spirit of His Son' — the same Spirit who animated the eternal Son's own cry to the Father — into the hearts of adopted sons. That the Spirit cries 'Abba' in the believer's heart is not a feeling to be cultivated but a divine act testifying to a legal reality already established. Adoption precedes the Spirit's witness; the Spirit confirms what is already true.
For you did not receive a spirit of slavery that returns you to fear, but you received the Spirit of adoption to sonship, by whom we cry, “Abba! Father!”
Romans 8:15 contrasts the spirit of slavery (the old condition) with the Spirit of adoption (the new condition). The word 'slavery' echoes the Galatians argument: before Christ, existence under the law was a form of bondage. Now the Spirit the believer has received is specifically a Spirit of huiothesia — his presence in the heart is the marker of adoptive sonship, not of continued slavery. Fear belongs to the old relationship; 'Abba, Father' belongs to the new.
Not only that, but we ourselves, who have the firstfruits of the Spirit, groan inwardly as we wait eagerly for our adoption as sons, the redemption of our bodies.
Romans 8:23 introduces the eschatological dimension: adoption has a present aspect (the Spirit now) and a future fullness (the resurrection of the body). The huiothesia believers have received is real, but its complete expression awaits the resurrection. This prevents the error of treating present adoption as the sum total of salvation — there is a 'not yet' even within what has already been received.
He predestined us for adoption as His sons through Jesus Christ, according to the good pleasure of His will,
Ephesians 1:5 grounds adoption in divine predestination and the pleasure of God's will. Huiothesia is not a response to human choice or merit — it is the outworking of what God purposed before the foundation of the world. This establishes adoption as entirely a gift, rooted in God's sovereign grace, mediated through Jesus Christ.
BSB source-word alignment connects this entry to exact verse rows, English rendering, source form, transliteration, and parsing.
How English Renders ItA compact distribution from source-word alignment before the full evidence tables.
Greek word. God's legal act of bestowing full family status and inheritance rights upon those chosen as His children
God's legal act of bestowing full family status and inheritance rights upon those chosen as His children
(cf. the cl. phrases, υἱὸν τίθεσθαι, θετὸς υἱός), frequently in Inscr. (see Deiss., BS, 239), adoption of a son (or daughter); metaphorically, of God's relation established
Textus Receptus witness, full corpus Greek token appearances from Scrivener 1894 Textus Receptus in the full New Testament corpus.
5 Greek text appearances shown. Linked morphology labels have verse guides.
adoption
Read verseadoption
Read verseadoption
Read verseadoption
Read verseadoption
Read verseFull New Testament corpus: 260 chapters, 7,957 verses, 140,628 tokens. Data source: honza/textus-receptus (data only), with authority check against byztxt/greektext-textus-receptus.
How this word appears across different grammatical cases and numbers.
This word appears as a noun across 3 case and number patterns. The form changes show how the word functions in a sentence; they do not change the basic lexical meaning by themselves.
Verse guides are not available for this word yet, so verse references remain plain evidence markers.
Selected passage-level study witnesses for this word. This section is not the full occurrence list.
Showing 1 selected witness from 5 lexical occurrence verses.
υἱοθεσία is built from these roots:
Describes the believer’s new familial status and intimate relationship with God. Romans 8:12-17
Huiothesia is one of the most pastorally powerful words in the NT precisely because it names what God has done, not what believers feel. Adoption as a legal act means that the believer's standing as a son or daughter of God does not fluctuate with spiritual performance, emotional experience, or consistency of faith. The Roman legal adoption that stands behind the word made the adopted son fully equal to a natural son in every legal respect: he took the family name, was freed from all previous obligations and debts, and became heir to everything the father possessed.
That is what Paul is reaching for when he uses huiothesia for what God has done in Christ. The preacher who grasps this word will stop reducing salvation to forgiveness and start pressing the congregation toward the full reality: they are not just pardoned criminals — they are placed sons. They cry 'Abba' not as a devotional aspiration but as a statement of fact confirmed by the Spirit within them.
And they are heirs, which means the inheritance of the new creation is already theirs in legal principle, awaiting delivery at the resurrection (Rom. 8:23). Preaching huiothesia well requires resisting two pastoral errors: the error of making adoption primarily about emotion (feeling close to God), and the error of making it a reward for spiritual achievement.
Adoption is a legal placement that God accomplishes; the emotional and relational dimensions are real but secondary to the positional reality.
Gal.4.5
Huiothesia is a compound of huios (son) and the verbal noun thesis from tithēmi (to place, set, appoint). The -thesis suffix makes it an act of placement: the deliberate positioning of someone in the son-role. This is distinct from natural birth (gennēsis) — adoption is always intentional and legal, not biological. The Greco-Roman practice of adoptio is the immediate cultural background: a person from outside the family was legally transferred into it by a formal act of the pater familias, after which all previous debts and relationships were nullified and the adopted person took all the rights of a natural son including inheritance.
Paul's use of this term rather than a more generic 'sonship' word signals that he has this legal precision in view.
The OT foundation for huiothesia is Israel's relationship to God as son: 'Israel is my firstborn son' (Exod. 4:22); 'Out of Egypt I called my son' (Hos. 11:1). The nation as a whole occupied a sonship position, but it was a corporate and conditional relationship — the people could act as rebellious sons (Isa. 1:2). Paul in Romans 9:4 names huiothesia as one of Israel's covenant privileges.
The NT development is christological: the eternal Son (Rom. 8:3, Gal. 4:4) enters humanity to redeem those who are not sons by nature and place them in his own position as sons. The Son's obedience purchases adoption for the disobedient; the Son's relationship to the Father becomes the template and ground of the believer's relationship to the Father. Hebrews 1:2 names Christ as 'heir of all things' — the natural heir — and Romans 8:17 extends that heirship to those who are co-heirs with Christ.
What the Son possesses by nature, the adopted sons possess by grace. The future fullness of huiothesia (Rom. 8:23) arrives at the resurrection, when the body itself is redeemed and the full family likeness is revealed.
MorphGNT Strong's Dictionary XML — CC0 1.0 Public Domain
Open Scriptures Hebrew Bible (morphhb/OSHB) — CC BY 4.0
Open Scriptures Hebrew Lexicon — CC BY 4.0
Berean Standard Bible (BSB) source-word alignment - CC0 Public Domain