The Nature of Sin in Adoption Theology
Sin in adoption theology functions as the condition from which believers are rescued and the contrast that magnifies the grace of their new status. Adoption, as Paul describes it, brings individuals "into the number of [God's] redeemed family" and grants them "all the blessings he has provided" [2]. This transfer presupposes a prior state of alienation rooted in sin—a state defined as "any want of conformity unto or transgression of the law of God" in both inward disposition and outward conduct [1]. The doctrine of adoption thus addresses not merely legal standing but the relational rupture sin creates between humanity and God.
The Inherited Condition
Reformed theology emphasizes that sin precedes conscious moral agency. David's confession in Psalm 51:5—"I was shapen in iniquity"—refers to "original sin and corruption, derived to him by natural generation" [7]. Calvin rejected the Pelagian notion that sin spreads only by imitation, noting that David, "while still enclosed in his mother's womb, could not be an imitator of Adam, yet he confesses that he was conceived in sin" [9]. This inherited corruption means "all human beings are born sinners," though "the godly fight against it" while "the wicked indulge their sinful nature" [5]. The doctrine of adoption presupposes this universal condition: believers are "received into God's family from the world" [4], a world characterized by rebellion against divine law.
Sin as Relational Rupture
Sin is "an offence against a personal lawgiver and moral governor" [1], not merely a violation of abstract principle. This relational dimension explains why adoption language appears in Scripture: God restores what sin severed. Paul connects adoption with justification, describing how believers "receive the Spirit of adoption" and are led by the Spirit as "evidence" of their new status [3]. The contrast is stark: those who persist in sin are "of the devil" not by generation but by imitation, becoming "a child of the devil by imitating him" [6]. Adoption reverses this allegiance, transferring individuals from one family to another.
The Mediator's Sinlessness
Christ's role as mediator required full identification with humanity "in a body like the bodies we sinners have," yet without inheriting "a sinful nature from Adam" [8]. His sinlessness made him fit to offer himself as "a sacrifice for our sins" [8], addressing both the guilt of actual transgressions and the corruption of human nature. Adoption depends on this substitutionary work: believers are "gathered together in one by Christ" [3] precisely because he bore the penalty their sin deserved.
Sources
- Easton's Bible Dictionary “Easton's Bible Dictionary: Sin — Is "any want of conformity unto or transgression of the law of God" (1 John 3:4; Rom. 4:15), in the inward state and habit of the soul, as well as in the outward conduct of the life, whether by omission or commission (Rom. 6:12-17; 7:5-24). It is "not a mere violation of the law of our constitution, nor of the system of things, but an offence against a personal lawgiver and moral governor who vindicates his law with penalties. The soul that sins is always conscious that his sin is (1) intrinsically vile and polluting, and (2) that it justly deserves punishment,”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Adoption — The giving to any one the name and place and privileges of a son who is not a son by birth. (1.) Natural. Thus Pharaoh's daughter adopted Moses (Ex. 2:10), and Mordecai Esther (Esther 2:7). (2.) National. God adopted Israel (Ex. 4:22; Deut. 7:6; Hos. 11:1; Rom. 9:4). (3.) Spiritual. An act of God's grace by which he brings men into the number of his redeemed family, and makes them partakers of all the blessings he has provided for them. Adoption represents the new relations into which the believer is introduced by justification, and the privileges connecte”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Adoption — Explained -- 2Co 6:18. Is according to promise -- Ro 9:8; Ga 3:29. Is by faith -- Ga 3:7,26. Is of God's grace -- Eze 16:3-6; Ro 4:16,17; Eph 1:5,6,11. Is through Christ -- Joh 1:12; Ga 4:4,5; Eph 1:5; Heb 2:10,13. Saints predestinated to -- Ro 8:29; Eph 1:5,11. Of Gentiles, predicted -- Ho 2:23; Ro 9:24-26; Eph 3:6. The Adopted are gathered together in one by Christ -- Joh 11:52. New birth connected with -- Joh 1:12,13. The Holy Spirit is a Witness of -- Ro 8:16. Being led by the Spirit is an evidence of -- Ro 8:14. Saints receive the Spirit of -- Ro 8:15”
- Smith's Bible Dictionary “Smith's Bible Dictionary: Adoption — an expression used by St. Paul in reference to the present and prospective privileges of Christians. (Romans 8:15,23; Galatians 4:5; Ephesians 1:5) He probably alludes to the Roman custom by which a person not having children of his own might adopt as his son one born of other parents. The relationship was to all intents and purposes the same as existed between a natural father and son. The term is used figuratively to show the close relationship to God of the Christian. (Galatians 4:4,5; Romans 8:14-17) He is received into God's family from the world, and ”
- Psalms (Protestant academic) “Tyndale House on Psalms 58:3: 58:3 All human beings are born sinners (see 51:5); however, whereas the wicked indulge their sinful nature, the godly fight against it (Rom 7:19-23; Jas 4:1-10).”
- 1 John (Presbyterian) “Jamieson, Fausset & Brown on 1 John 3:8: He that committeth sin is of the devil--in contrast to "He that doeth righteousness," Jo1 3:7. He is a son of the devil (Jo1 3:10; Joh 8:44). John does not, however, say, "born of the devil." as he does "born of God," for "the devil begets none, nor does he create any; but whoever imitates the devil becomes a child of the devil by imitating him, not by proper birth" [AUGUSTINE, Ten Homilies on the First Epistle of John, Homily 4.10]. From the devil there is not generation, but corruption [BENGEL]. sinneth from the beginning--from the time that any beg”
- Psalms (Baptist/Reformed) “John Gill on Psalms 51:5: Behold, I was shapen in iniquity,.... This cannot be understood of any personal iniquity of his immediate parents; since this respects his wonderful formation in the womb, in which both he and they were wholly passive, as the word here used is of that form; and is the amazing work of God himself, so much admired by the psalmist, Psa 139:13; and cannot design any sinfulness then infused into him by his Maker, seeing God cannot be the author of sin; but of original sin and corruption, derived to him by natural generation: and the sense is, that as soon as ever the mass ”
- Romans (Protestant academic) “Tyndale House on Romans 8:3: 8:3 our sinful nature: See study note on 6:19. • in a body like the bodies we sinners have: Jesus identified with sinful people so that he could be their representative and redeem them. Paul also implies that Jesus’ incarnate nature was not exactly like ours; born of a virgin through the power of the Holy Spirit, Jesus did not inherit a sinful nature from Adam. • a sacrifice for our sins: In the Greek Old Testament, this phrase frequently describes a sin offering, and three of the eight New Testament occurrences also have this meaning (Heb 10:6, 8; 13:11). Christ w”
- CCEL (Reformed) “Calvin, Commentary on Genesis, Vol. 1 (Gen 1-23), section 7.20: pronounced in the Scriptures. In the first place, Scripture clearly teaches us that we are born vicious and perverse. The cavil of Pelagius was frivolous, that sin proceeded from Adam by imitation. For David, while still enclosed in his mother’s womb, could not be an imitator of Adam, yet he confesses that he was conceived in sin, ( Psalm 51:5 .) A fuller proof of this matter, and a more ample definition of original sin, may be found in the Institutes; 171 171 Calvin’s Institutes, Book II, chap. 1, 2, 3. yet here, in a single word”