What Is Sanctification in the Bible?
What Is Sanctification in the Bible? Sanctification is the ongoing process by which God transforms believers into the likeness of Christ through the work of the Holy Spirit.
Key verse: 1 Thessalonians 4:3 (KJV)
Sanctification is the ongoing process by which God transforms believers into the likeness of Christ through the work of the Holy Spirit.
Sanctification is the ongoing process by which God transforms believers into the likeness of Christ through the work of the Holy Spirit.
"For this is the will of God, even your sanctification, that ye should abstain from fornication." — 1 Thessalonians 4:3 (KJV)
Meaning
Plain-language explanation
In Context
Surrounding KJV scripture
Related Verses
Cross-reference scriptures
The Biblical Answer
While justification is a one-time event where God declares a sinner righteous, sanctification is the lifelong process of being made holy. It has three aspects: positional (believers are already set apart in Christ), progressive (the daily work of the Spirit conforming us to Christ's image), and final (when believers are glorified in heaven). Paul wrote to the Thessalonians that God's will is their sanctification. He told the Philippians to work out their salvation with fear and trembling, knowing that God is the one working in them. Sanctification involves cooperation between divine power and human obedience — God provides the ability, but believers must actively pursue holiness, put off sin, and put on Christlike character.
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Key Scripture References
"For this is the will of God, even your sanctification, that ye should abstain from fornication."
"Work out your own salvation with fear and trembling. For it is God which worketh in you both to will and to do of his good pleasure."
"But we all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory, even as by the Spirit of the Lord."
Frequently asked questions
Frequently asked questions
Related Questions
What Is Justification in the Bible?
Justification is God's legal declaration that a sinner is righteous, based not on their own merit but on faith in Jesus Christ.
What Does It Mean to Be Born Again?
Being born again means experiencing a spiritual rebirth through faith in Jesus Christ, receiving a new nature and eternal life from God.
Did Jesus Really Rise from the Dead?
The Bible presents the resurrection as historical fact, supported by eyewitness testimony, an empty tomb, and transformed lives.
Is Jesus God?
Yes — the Bible teaches that Jesus is fully God and fully man, the second person of the Trinity.
What Is the Trinity?
The Trinity is the doctrine that God exists as three persons — Father, Son, and Holy Spirit — in one divine being.
Deep Dive Commentary
For a more in-depth study, read our verse-by-verse commentary:
Related Reading
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Theology & Doctrine
Sanctification Bible Quiz
Set apart for holiness — the biblical doctrine of growing in Christlikeness.
Bible Verses About Sanctification
10 curated KJV verses
Sanctification (ἁγιασμός (Hagiasmos))
The process of being made holy; set apart and transformed by the Spirit
Read it in context
The answer above sits inside 1 Thessalonians. The 365-day chronological plan reads it in the order the events happened.
Read 1 Thessalonians on day 322 of the chronological Bible reading planKeep the verses to hand
Every verse quoted in “What Is Sanctification in the Bible?” comes from the King James Version, free to download and print.
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