Sanctification

“It is God’s will that you should be sanctified” (1 Thess 4:3, ESV).

According to the Apostle Paul, the Church is called to a life of holiness, urging believers to abstain from impurity and sin, and to live in sanctification. Here, “the will of God” should be understood as standing in opposition to the passionate desires characteristic of pagan cultures, while “sanctification” refers to an ongoing process that begins at conversion and is progressively realised through the power of the Holy Spirit.

Victory over Sin.

Paul himself recognises the ongoing struggle with sin, an experience that many believers share. As he confesses, “For I do not do the good I want, but the evil I do not want is what I keep on doing” (Rom 7:19, ESV). Yet, Paul does not leave the doctrine of the Christian life at the level of struggle or “messy spirituality.” In Romans 8:12-13, Paul provides a triumphant perspective on overcoming sin through the empowering work of the Holy Spirit: “So then, brothers, we are debtors, not to the flesh, to live according to the flesh. For if you live according to the flesh, you will die, but if by the Spirit you put to death the deeds of the body, you will live” (Rom 8:12–13, ESV).

As John Stott observes, this passage draws attention to the vital theme of mortification—the putting to death of sinful practices. Stott emphasises that in this work, believers are not passive, waiting for transformation to occur without personal engagement. While it is the Holy Spirit who grants the desire, determination, and discipline to reject evil, it is ultimately the believer who bears the responsibility to actively resist the deeds of the flesh.

The Law of Life.

Undoubtedly, the Spirit’s power enables believers to live in victory over the sinful nature, but it requires that we bring our struggles into the realm of the Spirit’s transforming work. As F.F. Bruce explains, “Christ dwells in them by the Spirit, and his Spirit infuses into them a new principle-the law of life—which is stronger than indwelling sin and sets them free from its tyranny.” According to Bruce, when individuals rely solely on their efforts and resources, they engage in a losing battle; but when they draw upon the power and resources available in Christ Jesus, they become “more than conquerors.”

The purpose here is not to condemn those who battle sinful patterns or addictions but to frame the proper narrative for Christian spirituality: the pursuit of holiness and the call to become more like God. As Scripture declares, “You shall be holy, for I am holy” (1 Pet 1:16, ESV)—this is the ultimate goal of the Christian life. Such a life brings many blessings, as seen in Psalm 1:1: “Blessed is the man who walks not in the counsel of the wicked, nor stands in the way of sinners, nor sits in the seat of scoffers.”

Therefore, even those who feel deeply entangled in sin can, by the power of Christ, press the spiritual reset button, fully assured that the blood of Jesus covers every sin and offers the hope of renewal.