Relationship Between Repentance and Sanctification in Christian Life

Repentance and sanctification are distinct yet interconnected processes within the Christian life, both essential for a believer's spiritual journey. Repentance, at its core, involves a fundamental change of mind and purpose, leading to a transformation of life ^[5]. Sanctification, on the other hand, is the ongoing work of the Holy Spirit that brings the believer's entire being increasingly under the influence of new, gracious principles implanted during regeneration ^[1].

The Greek words used in the New Testament for repentance highlight its depth. Metamelomai refers to a change of mind that might produce regret or remorse, but not necessarily a change of heart, as seen in Judas's repentance (Matthew 27:3) ^[5]. In contrast, metanoeo and its cognate noun metanoia signify a true change of mind, purpose, and life, to which the remission of sins is promised ^[5]. This evangelical repentance is a turning away from sin and toward God, a recognition of one's enmity with God due to sin, and a desire for reconciliation ^{[2, 5]}.

Reconciliation is a key concept here, denoting a change from enmity to friendship, which is mutual ^[2]. While God's disposition towards humanity does not change in the sense of His perfect character, reconciliation involves a change in the sinner's character, moving from being an enemy of God by wicked works to yielding full confidence and love to Him (Colossians 1:21-22) ^[2]. The apostle Paul beseeches believers to "be reconciled to God," meaning to lay aside their enmity (2 Corinthians 5:20) ^[2]. This reconciliation is made possible through the death of Christ, who is the "atoning sacrifice" for sins (Romans 3:25) ^{[4, 9]}. The word "atonement" itself means "at-one-ment," signifying the state of being reconciled ^[4]. Christ's death brings about this reconciliation, allowing believers to have peace with God (Romans 5:1) ^{[4, 10]}.

This initial act of repentance and reconciliation marks the beginning of the Christian life, often linked with regeneration. Matthew Henry notes that regeneration, along with reconciliation, is a consequence of Christ's death for believers ^[12]. Regeneration involves a "weanedness from the world," enabling believers to live above worldly concerns and desires ^[12].

Sanctification builds upon this foundation. It is not merely a moral reformation but a work of the Holy Spirit that perfects the work begun in regeneration ^[1]. This process extends to the "whole man" (Romans 6:13; 2 Corinthians 4:6; Colossians 3:10; 1 John 4:7; 1 Corinthians 6:19) ^[1]. The Holy Spirit's special office in the plan of redemption is to carry on this work of sanctification (1 Corinthians 6:11) ^[1].

Scripture presents sanctification as a separation to the service of God (Psalm 4:3; 2 Corinthians 6:17) ^[3]. It is effected by God (Ezekiel 37:28; 1 Thessalonians 5:23; Jude 1:1), Christ (Hebrews 2:11; 13:12), and the Holy Spirit (Romans 15:16; 1 Corinthians 6:11) ^[3]. It is "in Christ" (1 Corinthians 1:2) and "through the atonement of Christ" (Hebrews 10:10; 13:12) ^[3]. The Word of God also plays a crucial role in sanctification (John 17:17, 19; Ephesians 5:26) ^[3]. Indeed, Christ is made "of God, to us" sanctification (1 Corinthians 1:30) ^[3].

The relationship between repentance and sanctification can be understood as sequential and continuous. Repentance is the initial turning, the decisive break from a life of sin and enmity with God. It is the gateway to reconciliation and the new life in Christ. Sanctification is the ongoing journey of that new life, a progressive transformation into Christlikeness. As believers are "made free from sin" and become "servants of God," they "have their fruit of sanctification, and the result of eternal life" (Romans 6:22) ^[8]. This implies that sanctification is the natural outcome and ongoing process for those who have repented and been reconciled to God.

John Calvin emphasizes that the "entire blessing of redemption consists mainly in these two things, remission of sins, and spiritual regeneration" ^[11]. While he uses "regeneration" where others might use "sanctification" in this context, the underlying idea is the same: a newness of life that follows the forgiveness of sins. This newness of life is not a one-time event but a continuous process of growth and purification.

The concept of purification, often associated with Levitical law, provides an Old Testament parallel to the New Testament understanding of sanctification ^[6]. Just as ceremonial uncleanness required specific rituals for restoration to community and worship, sin requires spiritual purification, which is achieved through Christ and the ongoing work of the Spirit ^[6]. The Day of Atonement, for instance, was the great annual purification for the people (Leviticus 16:33) ^{[6, 7]}. This foreshadows the ultimate purification offered through Christ's atoning sacrifice.

In essence, repentance initiates the break from sin and opens the door to a relationship with God, while sanctification is the lifelong process of growing in holiness and conformity to Christ within that relationship. One leads to the other, and both are indispensable for the Christian life.

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: Reconcilation — A change from enmity to friendship. It is mutual, i.e., it is a change wrought in both parties who have been at enmity. (1.) In Col. 1:21, 22, the word there used refers to a change wrought in the personal character of the sinner who ceases to be an enemy to God by wicked works, and yields up to him his full confidence and love. In 2 Cor. 5:20 the apostle beseeches the Corinthians to be "reconciled to God", i.e., to lay aside their enmity. (2.) Rom. 5:10 refers not to any change in our disposition toward God, but to God himself, as the party reconcile”
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: Atonement — This word does not occur in the Authorized Version of the New Testament except in Rom. 5:11, where in the Revised Version the word "reconciliation" is used. In the Old Testament it is of frequent occurrence. The meaning of the word is simply at-one-ment, i.e., the state of being at one or being reconciled, so that atonement is reconciliation. Thus it is used to denote the effect which flows from the death of Christ. But the word is also used to denote that by which this reconciliation is brought about, viz., the death of Christ itself; and when so used it”
Easton's Bible Dictionary “Easton's Bible Dictionary: Repentance — There are three Greek words used in the New Testament to denote repentance. (1.) The verb metamelomai is used of a change of mind, such as to produce regret or even remorse on account of sin, but not necessarily a change of heart. This word is used with reference to the repentance of Judas (Matt. 27:3). (2.) Metanoeo, meaning to change one's mind and purpose, as the result of after knowledge. This verb, with (3) the cognate noun metanoia, is used of true repentance, a change of mind and purpose and life, to which remission of sin is promised. Evangelical”
Easton's Bible Dictionary “Easton's Bible Dictionary: Purification — The process by which a person unclean, according to the Levitical law, and thereby cut off from the sanctuary and the festivals, was restored to the enjoyment of all these privileges. The great annual purification of the people was on the Day of Atonement (q.v.). But in the details of daily life there were special causes of cermonial uncleanness which were severally provided for by ceremonial laws enacted for each separate case. For example, the case of the leper (Lev. 13, 14), and of the house defiled by leprosy (14:49-53; see also Matt. 8:2-4). Uncle”
Leviticus “Then he shall make atonement for the Holy Sanctuary; and he shall make atonement for the Tent of Meeting and for the altar; and he shall make atonement for the priests and for all the people of the assembly. -- Leviticus 16:33”
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”
Romans “whom God sent to be an atoning sacrifice, through faith in his blood, for a demonstration of his righteousness through the passing over of prior sins, in God’s forbearance; -- Romans 3:25”
Romans (Nonconformist/Puritan) “Matthew Henry on Romans 5:1: The precious benefits and privileges which flow from justification are such as should quicken us all to give diligence to make it sure to ourselves that we are justified, and then to take the comfort it renders to us, and to do the duty it calls for from us. The fruits of this tree of life are exceedingly precious. I. We have peace with God, Rom 5:1. It is sin that breeds the quarrel between us and God, creates not only a strangeness, but an enmity; the holy righteous God cannot in honour be at peace with a sinner while he continues under the guilt of sin. Justific”
CCEL (Reformed) “Calvin, Commentary on Philippians, Colossians, 1-2 Thessalonians, section 28.3: become man, and be a partaker of our flesh, that he might be our brother: it was necessary that he should by dying become a sacrifice, that he might make his Father propitious to us. That he might present us holy. Here we have the second and principal part of our salvation — newness of life. For the entire blessing of redemption consists mainly in these two things, remission of sins, and spiritual regeneration. ( Jeremiah 31:33 .) What he has already spoken of was a great matter, that righteousness has been procure”
2 Corinthians (Nonconformist/Puritan) “Matthew Henry on 2 Corinthians 5:16: In these verses the apostle mentions two things that are necessary in order to our living to Christ, both of which are the consequences of Christ's dying for us; namely, regeneration and reconciliation. I. Regeneration, which consists of two things; namely, 1. Weanedness from the world: "Henceforth we know no man after the flesh, Co2 5:16. We do not own nor affect any person or thing in this world for carnal ends and outward advantage: we are enabled, by divine grace, not to mind nor regard this world, nor the things of this world, but to live above it. The”

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