Justification vs. Sanctification
Last updated: 2026-04-10
Sanctification is the ongoing work of God's grace by which believers, having been united to Christ, are progressively renewed in their entire nature to die unto sin and live unto righteousness, bearing the fruit of their union with Him.
📖 A Work of Divine Grace
Sanctification is not merely our own effort, but a work of God's free grace. As stated in the 1689 LBCF Ch.13 §1, those united to Christ are "really and personally" sanctified through the virtue of His death and resurrection, by the indwelling of His Word and Spirit. This mirrors the teaching found in the Westminster Shorter Catechism Q.35, which defines it as the process whereby we are enabled "more and more to die unto sin, and live unto righteousness." It is a life-long transformation rooted in what Christ has already accomplished for us.
Sources: 1689 LBCF Ch.13 §1 · Westminster Shorter Catechism Q.35
⚖️ Justification vs. Sanctification
It is pastorally vital to distinguish between these two benefits of the gospel. While they are inseparably joined, the Westminster Larger Catechism Q.77 notes that in justification, God imputes Christ’s righteousness to us, pardoning our sin. In sanctification, His Spirit infuseth grace, subduing sin. Justification is a perfect status before God, whereas sanctification in this life is not yet perfect in any, but is a process of "growing up to perfection." We do not obey to become accepted; we obey because we are already accepted in the Beloved.
Sources: Westminster Larger Catechism Q.77
✝️ The Rootedness in Christ's Death
Ultimately, our sanctification is the fruit of Christ’s finished work. As John Owen explains in The Death of Death in the Death of Christ, the blood of Christ is the meritorious cause that secures our holiness. We are crucified with Him so that "the body of sin might be destroyed." Because Christ was raised from the dead, we are quickened to live unto God. Faith, which is the instrument of our sanctification, is itself a gift procured by His death, as seen in the believer's life today.
Sources: The Death of Death in the Death of Christ (John Owen) · The Death of Death in the Death of Christ
Justification is a definitive, legal declaration that pardons the sinner through the imputed righteousness of Christ, whereas sanctification is an ongoing, internal work of the Spirit that progressively subdues sin and enables the believer to grow in holiness.
⚖️ A Distinct Work of Grace
While justification and sanctification are inseparably joined—for no one is justified who is not also being sanctified—they are functionally distinct. In justification, God treats us as righteous by imputing the work of Christ to our account, resulting in the pardon of our sins. In sanctification, the Holy Spirit works within us to subdue the power of sin, renewing our nature so that we may increasingly live unto righteousness. As noted in the Westminster Larger Catechism — Question 77, justification is a perfect status that frees the believer from the revenging wrath of God, whereas sanctification is not perfect in this life but is a process of growing toward maturity.
Sources: Westminster Larger Catechism — Question 77
🌱 Rooted in the Gospel
It is crucial to remember that our growth in holiness (sanctification) does not earn our standing before God; rather, it is the fruit of our union with Christ. Because we have been justified—accepted and loved in Christ—we are now empowered to put sin to death. As the 1689 LBCF Ch.13 §1 explains, those who are united to Christ are sanctified through the very same virtue of His death and resurrection that secured our justification. We do not obey to be accepted; we obey because we are already accepted. As the Apostle Paul writes, 'But now being made free from sin and become servants to God, ye have your fruit unto sanctification, and the end eternal life' (Romans 6:22).
Sources: 1689 LBCF Ch.13 §1 · Romans 6:22
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