Sanctification

Sanctification is the act or process by which a person or thing is set apart as holy to God, and the word renders the Hebrew qadash and the Greek hagiazō, both of which carry the root sense “to make holy, to consecrate, to set apart.” The text uses the term for both a decisive setting-apart and a continuing work: God tells Jeremiah, “Before you were born, I sanctified you. I have appointed you a prophet to the nations” (Jeremiah 1:5), where sanctification precedes birth and is ordered to a task, while Paul prays, “May the God of peace himself sanctify you completely” (1 Thessalonians 5:23), a request for something still outstanding.

Scripture also speaks of sanctification as accomplished for believers and given to them. Paul writes that Christ Jesus “was made to us wisdom from God, and righteousness and sanctification, and redemption” (1 Corinthians 1:30), and tells the Corinthians “you were washed. You were sanctified. You were justified in the name of the Lord Jesus” (1 Corinthians 6:11), placing sanctification in a past-tense series alongside washing and justification. Acts 26:18 speaks of “an inheritance among those who are sanctified by faith in me,” and Hebrews 9:14 grounds cleansing of conscience in “the blood of Christ, who through the eternal Spirit offered himself without defect to God.”

Other passages tie sanctification to God’s initiative and to ongoing transformation. It is “sanctification of the Spirit” joined to belief in the truth (2 Thessalonians 2:13) and to “the foreknowledge of God the Father” (1 Peter 1:2); Ephesians 1:4 says God “chose us in him before the foundation of the world, that we would be holy and without defect before him in love.” The working is attributed to God himself — “working in you that which is well pleasing in his sight, through Jesus Christ” (Hebrews 13:21) — and is described in the image of robes “made white in the Lamb’s blood” (Revelation 7:14). Galatians 2:20 supplies the pattern of that life: “it is no longer I who live, but Christ lives in me.”

Christian traditions differ over how these strands fit together. In Catholic and Orthodox teaching, sanctification is a real transformation of the person wrought by grace and ordinarily mediated through the sacraments, with Orthodoxy framing its goal as theosis, participation in the divine life; Lutheran teaching sharply distinguishes justification as God’s forensic verdict from sanctification as its fruit in the believer, resisting any mingling of the two; Reformed theology commonly speaks of a definitive sanctification in union with Christ alongside a progressive one; Wesleyan and Holiness traditions speak of entire sanctification or Christian perfection as a distinct work of grace, which most Reformed and Lutheran writers do not accept as a separate experience. Pentecostal and charismatic readings characteristically emphasize the Spirit as the agent of sanctification. These are genuine confessional disagreements about how the biblical language of setting apart, cleansing, and growth is to be ordered, not merely differences of emphasis.

AI-generated reference entry, grounded in the passages where this term appears — history and Scripture stated as such, interpretation labeled as interpretation. Not a substitute for the text itself.