Sanctification and the Presence of Sin in Christians
Sanctification designates the Spirit's work of progressively conforming believers to the image of Christ, extending "to the whole man" and carrying "to perfection the work begun in regeneration" [1]. Romans 6:22 locates this process in those "made free from sin" who have "become servants of God," yielding "fruit of sanctification" that culminates in eternal life [6]. Yet Scripture and Christian tradition consistently affirm that believers remain susceptible to sin throughout earthly life, creating a tension that has shaped pastoral theology across confessional boundaries.
The Biblical Framework
Paul's letters establish both the reality of sanctification and the persistence of sinful impulses. In 1 Thessalonians 3:13, he prays for the establishing of hearts "blameless in sanctification" at Christ's return [5], indicating that complete blamelessness remains eschatological rather than present. The apostle John addresses this tension directly: "If we say that we have no sin, we deceive ourselves, and the truth is not in us" (1 John 1:8). The commentary tradition notes that this verse refers "to the present GUILT remaining (until cleansed) from the actual sins committed, and to the SIN of our corrupt old nature still adhering to us" [11]. John distinguishes between the guilt of specific transgressions and the indwelling corruption that persists after conversion.
First John 1:10 intensifies the claim: denying that "we have sinned" makes God a liar, with the perfect tense bringing "the commission of sins to the present time, not merely sins committed before, but since, conversion" [11]. The text thus rules out any claim to sinless perfection in this life. Psalm 58:3 declares that "all human beings are born sinners," yet "whereas the wicked indulge their sinful nature, the godly fight against it" [7], pointing to a qualitative difference in how believers relate to indwelling sin.
Sanctification as Divine Work
The sources consistently attribute sanctification to God's initiative rather than human effort. It is "effected by God," "by Christ," and "by the Holy Spirit" [3]. Hebrews 2:11 and 13:12 identify Christ as the sanctifying agent, while Romans 15:16 and 1 Corinthians 6:11 credit the Spirit [3]. This work occurs "through the atonement of Christ" and "through the word of God" [3], establishing both a forensic foundation and a means of ongoing transformation. Sanctification is thus "the special office of the Holy Spirit in the plan of redemption" [1], distinguishing it from mere moral reformation.
The Pauline corpus presents sanctification as both positional and progressive. First Corinthians 1:2 addresses believers as those "sanctified in Christ," indicating a definitive status, while 1 Thessalonians 4:3 declares "this is the will of God, even your sanctification," pointing to an ongoing process [13]. John Gill explains that "internal sanctification is the work of the Spirit of God, and is a principle of spiritual life in the soul," while "external sanctification arises from this, and lies in holiness of life and conversation" [13]. The distinction preserves both the Spirit's sovereign work and the believer's active participation.
The Persistence of Sin
Christian theology has consistently rejected the notion that regeneration eradicates the capacity to sin. Augustine, cited in the commentary tradition, argues that those who imitate the devil "become a child of the devil by imitating him, not by proper birth," since "from the devil there is not generation, but corruption" [8]. This preserves the ontological distinction between believers and unbelievers while acknowledging that Christians can commit acts characteristic of the devil's rebellion.
The Puritan tradition particularly emphasized the danger of antinomianism—the notion that grace nullifies moral obligation. Matthew Henry addresses the question, "Shall we continue in sin that grace may abound?" by calling it an "abuse" of the doctrine of free justification, noting that the apostle "startles at the thought of it" [12]. The concern reflects a pastoral awareness that doctrinal precision about justification must not undermine the call to holiness.
Psalm 19:13 distinguishes between inadvertent failures and "deliberate sins" committed with an "insolent" or "arrogant attitude," identifying "the great sin" as "rebellion" [9]. This taxonomy suggests that while all sin remains possible for believers, willful defiance represents a graver threat than weakness or ignorance. Romans 1:18–3:20 establishes that "Gentiles and Jews are equally under sin's power and cannot find favor with God by any action of their own" [10], a universal condition that regeneration addresses but does not instantly abolish.
Justification and Sanctification Distinguished
The sources carefully distinguish justification from sanctification to clarify how forgiven sinners remain in process. Justification is "the judicial act of God, by which he pardons all the sins of those who believe in Christ, and accounts, accepts, and treats them as righteous in the eye of the law" [4]. It is "the act of a judge and not of a sovereign," declaring that "all the claims of the law are satisfied" [4]. Forgiveness of sin, as "one of the constituent parts of justification," removes "the guilt of sin, or the sinner's actual liability to eternal wrath" [2], and this pardon is offered "freely" and "for ever" [2].
Sanctification, by contrast, involves "more than a mere moral reformation of character" and extends beyond the initial act of regeneration [1]. It brings "the whole nature more and more under the influences of the new gracious principles implanted in the soul" [1], indicating a gradual rather than instantaneous transformation. The Westminster tradition, reflected in these sources, maintains that justification is complete at conversion while sanctification progresses throughout life, reaching completion only at glorification.
Practical Implications
The coexistence of sanctification and remaining sin shapes Christian self-understanding and communal life. First Peter 3:15 calls believers to "sanctify Christ as Lord" in their hearts [14], an inward act that precedes outward apologetic readiness. This "inward sanctification of God in the heart" establishes the Spirit's dwelling place [14] and provides the ground for resisting temptation. Yet the call to "mortification of sin" in 1 Thessalonians 4:3–4 [3] presupposes that sin remains present to be mortified.
The doctrine guards against both presumption and despair. Believers cannot claim sinless perfection without self-deception [11], yet they are not left to their own resources. The Spirit's sanctifying work ensures that those "elected to salvation" are progressively conformed to Christ [3], even as they confess ongoing failures. The eschatological horizon—Christ's return with "all His saints" [5]—locates final blamelessness in the future, relativizing present struggles without excusing them. The tension between "already" and "not yet" thus defines the Christian life, where justification secures the verdict and sanctification works out its implications in a nature still marked by the fall.
Sources
- Easton's Bible Dictionary “Easton's Bible Dictionary: Sanctification — Involves more than a mere moral reformation of character, brought about by the power of the truth: it is the work of the Holy Spirit bringing the whole nature more and more under the influences of the new gracious principles implanted in the soul in regeneration. In other words, sanctification is the carrying on to perfection the work begun in regeneration, and it extends to the whole man (Rom. 6:13; 2 Cor. 4:6; Col. 3:10; 1 John 4:7; 1 Cor. 6:19). It is the special office of the Holy Spirit in the plan of redemption to carry on this work (1 Cor. 6:1”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Forgiveness of sin — One of the constituent parts of justification. In pardoning sin, God absolves the sinner from the condemnation of the law, and that on account of the work of Christ, i.e., he removes the guilt of sin, or the sinner's actual liability to eternal wrath on account of it. All sins are forgiven freely (Acts 5:31; 13:38; 1 John 1:6-9). The sinner is by this act of grace for ever freed from the guilt and penalty of his sins. This is the peculiar prerogative of God (Ps. 130:4; Mark 2:5). It is offered to all in the gospel. (See [219]JUSTIFICATION.)”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Sanctification — Is separation to the service of God -- Ps 4:3; 2Co 6:17. Effected by God. -- Eze 37:28; 1Th 5:23; Jude 1:1. Christ. -- Heb 2:11; 13:12. The Holy Spirit. -- Ro 15:16; 1Co 6:11. In Christ -- 1Co 1:2. Through the atonement of Christ -- Heb 10:10; 13:12. Through the word of God -- Joh 17:17,19; Eph 5:26. Christ made, of God, to us -- 1Co 1:30. Saints elected to salvation through -- 2Th 2:13; 1Pe 1:2. All saints are in a state of -- Ac 20:32; 26:18; 1Co 6:11. The Church made glorious by -- Eph 5:26,27. Should lead to Mortification of sin. -- 1Th 4:3,4. Ho”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Justification — A forensic term, opposed to condemnation. As regards its nature, it is the judicial act of God, by which he pardons all the sins of those who believe in Christ, and accounts, accepts, and treats them as righteous in the eye of the law, i.e., as conformed to all its demands. In addition to the pardon (q.v.) of sin, justification declares that all the claims of the law are satisfied in respect of the justified. It is the act of a judge and not of a sovereign. The law is not relaxed or set aside, but is declared to be fulfilled in the strictest sense; an”
- I Thessalonians “I Thessalonians 3:13 (YLT) — to the establishing your hearts blameless in sanctification before our God and Father, in the presence of our Lord Jesus Christ with all His saints.”
- Romans “But now, being made free from sin, and having become servants of God, you have your fruit of sanctification, and the result of eternal life. -- Romans 6:22”
- 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 (Protestant academic) “Tyndale House on Psalms 19:13: 19:13 An individual who commits deliberate sins does so with an insolent (86:14) or arrogant (119:21, 69) attitude. • The great sin is rebellion (see 32:1).”
- Romans (Protestant academic) “Tyndale House on Romans 1:18: 1:18–3:20 Paul delays exploring the theme of righteousness through faith (see 3:21) until after he first teaches about universal sinfulness. Gentiles (1:18-32) and Jews (2:1–3:8) are equally under sin’s power and cannot find favor with God by any action of their own (3:9-20). 1:18 God’s anger is not a spontaneous emotional outburst, but the holy God’s necessary response to sin. The Old Testament often depicts God’s anger (Exod 32:10-12; Num 11:1; Jer 21:3-7) and predicts a decisive outpouring of God’s wrath on human sin at the end of history. While Paul usually de”
- 1 John (Presbyterian) “Jamieson, Fausset & Brown on 1 John 1:10: Parallel to Jo1 1:8. we have not sinned--referring to the commission of actual sins, even after regeneration and conversion; whereas in Jo1 1:8, "we have no sin," refers to the present GUILT remaining (until cleansed) from the actual sins committed, and to the SIN of our corrupt old nature still adhering to us. The perfect "have . . . sinned" brings down the commission of sins to the present time, not merely sins committed before, but since, conversion. we make him a liar--a gradation; Jo1 1:6, "we lie"; Jo1 1:8, "we deceive ourselves"; worst of al”
- Romans (Nonconformist/Puritan) “Matthew Henry on Romans 6:1: The apostle's transition, which joins this discourse with the former, is observable: "What shall we say then? Rom 6:1. What use shall we make of this sweet and comfortable doctrine? Shall we do evil that good may come, as some say we do? Rom 3:8. Shall we continue in sin that grace may abound? Shall we hence take encouragement to sin with so much the more boldness, because the more sin we commit the more will the grace of God be magnified in our pardon? Is this a use to be made of it?" No, it is an abuse, and the apostle startles at the thought of it (Rom 6:2): "Go”
- 1 Thessalonians (Baptist/Reformed) “John Gill on 1 Thessalonians 4:3: For this is the will of God, even your sanctification,.... Which is another reason to enforce the above exhortation. "Sanctification" is internal or external. Internal sanctification is the work of the Spirit of God, and is a principle of spiritual life in the soul, a divine and spiritual light in the understanding, a flexion of the will to the will of God, and a settlement of the affections on divine things, and is an implantation of every grace in the heart. External sanctification arises from this, and lies in holiness of life and conversation; and is what ”
- 1 Peter (Presbyterian) “Jamieson, Fausset & Brown on 1 Peter 3:15: sanctify--hallow; honor as holy, enshrining Him in your hearts. So in the Lord's Prayer, Mat 6:9. God's holiness is thus glorified in our hearts as the dwelling-place of His Spirit. the Lord God--The oldest manuscripts read "Christ." Translate, "Sanctify Christ as Lord." and--Greek, "but," or "moreover." Besides this inward sanctification of God in the heart, be also ready always to give, &c. answer--an apologetic answer defending your faith. to every man that asketh you--The last words limit the universality of the "always"; not to a roller, ”