Holiness has been turned into either a code word for religious performance or a topic Christians avoid because it sounds restrictive. Scripture treats holiness as the basic call of every believer — set apart for God's purposes, distinct in posture from the surrounding culture, but not isolated from it. The holy man is not the man who avoids people; he is the man whose life is so visibly different that it draws people toward God. These passages reset the definition.
The Call to Holiness
1 Peter 1:15-16 (NLT)
"But now you must be holy in everything you do, just as God who chose you is holy. For the Scriptures say, 'You must be holy because I am holy.'" — 1 Peter 1:15-16
The bedrock call. Holiness is not optional; it is the consequence of God's holiness in those He has chosen. The verse appears throughout Scripture as God's direct call.
Leviticus 19:2 (NLT)
"You must be holy because I, the LORD your God, am holy." — Leviticus 19:2
The Old Testament source verse. God's holiness is the model; His people are called to mirror it in their conduct. The standard does not change between testaments.
Hebrews 12:14 (NLT)
"Work at living in peace with everyone, and work at living a holy life, for those who are not holy will not see the Lord." — Hebrews 12:14
Two parallel labors — peace and holiness. Both require work. Holiness is not automatic; it is pursued. The Christian leader who treats holiness as a personality trait will never grow into it.
Set Apart for God
Romans 12:2 (NLT)
"Don't copy the behavior and customs of this world, but let God transform you into a new person by changing the way you think." — Romans 12:2
Holiness is non-conformity. The Christian leader whose behavior is indistinguishable from his unbelieving peers has not yet been transformed. The mind change is the source; the visible difference is the fruit.
2 Corinthians 6:17-18 (NLT)
"Therefore, come out from among unbelievers, and separate yourselves from them, says the LORD. Don't touch their filthy things, and I will welcome you. And I will be your Father, and you will be My sons and daughters, says the LORD Almighty." — 2 Corinthians 6:17-18
Separation from defilement, not from people. The Christian is called to walk in the world without absorbing it. Most leaders fail at one direction or the other — total separation produces irrelevance; total absorption produces compromise.
1 Thessalonians 4:7 (NLT)
"God has called us to live holy lives, not impure lives." — 1 Thessalonians 4:7
Direct contrast. Holy or impure. The middle ground does not exist in Scripture's framing.
Holiness in Conduct
Ephesians 4:1 (NLT)
"Therefore I, a prisoner for serving the Lord, beg you to lead a life worthy of your calling, for you have been called by God." — Ephesians 4:1
The calling demands a worthy life. Worthy is the operative word — your conduct should match what God has done for you. The leader whose conduct contradicts his calling has chosen something other than holiness.
Colossians 3:5 (NLT)
"So put to death the sinful, earthly things lurking within you. Have nothing to do with sexual immorality, impurity, lust, and evil desires. Don't be greedy, for a greedy person is an idolater, worshiping the things of this world." — Colossians 3:5
Specific sins named explicitly. Holiness is not vague; it requires the death of specific patterns. Greed is named as idolatry — most modern leaders underweight this connection.
Titus 2:11-12 (NLT)
"For the grace of God has been revealed, bringing salvation to all people. And we are instructed to turn from godless living and sinful pleasures. We should live in this evil world with wisdom, righteousness, and devotion to God." — Titus 2:11-12
Grace teaches holiness. Many leaders treat grace as if it eliminated the call to holiness; Paul says the opposite. Real grace produces real holiness as its fruit.
Holiness as God's Work
1 Thessalonians 5:23 (NLT)
"Now may the God of peace make you holy in every way, and may your whole spirit and soul and body be kept blameless until our Lord Jesus Christ comes again." — 1 Thessalonians 5:23
The God of peace makes holy. Holiness is not self-generated; it is given. The Christian leader who tries to manufacture holiness from his own effort burns out. The one who cooperates with God's sanctifying work grows steadily.
Philippians 2:13 (NLT)
"For God is working in you, giving you the desire and the power to do what pleases Him." — Philippians 2:13
God supplies both desire and power. The leader who lacks desire is asking for the wrong thing; the right prayer is for God to give the desire itself. Most modern willpower-based holiness fails because it skips this.
Hebrews 10:14 (NLT)
"For by that one offering He forever made perfect those who are being made holy." — Hebrews 10:14
Already and not yet. Christ's offering made the believer perfect in standing; the process of being made holy continues. Both are true at once. The leader who only feels his ongoing struggle has missed the perfected standing; the one who only rests in the standing skips the active growth.
How to Use These Verses
Three practices. First, name one specific area of conformity to the world (Romans 12:2) and ask God to renew your mind there. Second, identify one sinful pattern Colossians 3:5 names and put it to death actively. Third, pray Philippians 2:13 — ask God for the desire itself, not just the willpower. Read more: Bible Verses About Integrity and Bible Verses About Self-Control.
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Frequently Asked Questions
What does the Bible say about holiness?
Scripture treats holiness as the basic call of every believer (1 Peter 1:15-16, Leviticus 19:2). It requires work (Hebrews 12:14), separation from defilement (2 Corinthians 6:17-18), non-conformity to the world (Romans 12:2), and the death of specific sinful patterns (Colossians 3:5). Holiness is not an advanced tier of Christianity; it is the basic Christian call.
Is holiness possible for ordinary Christians?
Yes — and required (Hebrews 12:14). 1 Thessalonians 5:23 says God Himself makes the believer holy; Philippians 2:13 says God gives both the desire and the power. Holiness is not a higher tier reserved for monks or pastors; it is the basic call of every believer, accomplished by God's work in cooperation with the believer's pursuit.
What does it mean to be 'set apart'?
The Hebrew and Greek words for holy literally mean set apart for a specific purpose. The Christian is set apart for God's purposes — not isolated from people but distinguishable in conduct, motivation, and direction. The holy man is not the man who avoids the world; he is the man whose life is visibly different inside the world.
How is holiness different from legalism?
Legalism is rule-keeping disconnected from relationship with Christ. Holiness flows from God working in the believer (Philippians 2:13). Legalism is performed; holiness is given. Legalism focuses on external compliance; holiness is internal transformation that produces external fruit. The man pursuing legalism is exhausted; the man pursuing holiness is being made new.
What are the specific sins Scripture says holiness puts to death?
Colossians 3:5 names sexual immorality, impurity, lust, evil desires, and greed (which Paul calls idolatry). Galatians 5:19-21 adds idolatry, sorcery, hostility, jealousy, anger, selfish ambition, dissension, division, envy, drunkenness, wild parties. The list is concrete, not vague — holiness has specific enemies that must be named and killed by the Spirit (Romans 8:13).