Biblical Studies Institute
Theological Studies · Doctrine of God
Meaning of Holiness in the Bible
"You shall be holy, for I the LORD your God am holy."
— Leviticus 19:2 (ESV)
"As he who called you is holy, you also be holy in all your conduct, since it is written, 'You shall be holy, for I am holy.'"
— 1 Peter 1:15-16 (ESV)
Holiness stands as one of the most central yet misunderstood concepts in Scripture. From the thundering proclamation of seraphim—"Holy, holy, holy is the LORD of hosts" (Isaiah 6:3)—to the apostolic exhortation to "strive for the holiness without which no one will see the Lord" (Hebrews 12:14), the Bible presents holiness as essential to God's nature and His people's identity. This comprehensive theological study examines the meaning of holiness throughout Scripture, exploring both God's absolute holiness and His call for believers to reflect His character.
Introduction: The Centrality of Holiness
Holiness is not merely one attribute among many in Scripture—it is the attribute that permeates all others. God's love is holy love. His justice is holy justice. His mercy is holy mercy. The Hebrew word for holiness (qodesh) appears over 950 times in the Old Testament, while the Greek word (hagios) occurs approximately 230 times in the New Testament. This frequency signals holiness's theological significance.
This study proceeds in four movements: examining the original language meanings, exploring God's holiness in Scripture, understanding the believer's call to holiness, and considering practical application for contemporary Christians.
Original Language Meaning
Understanding the Hebrew and Greek terms for holiness provides essential foundation for biblical interpretation.
קָדוֹשׁ
qadosh (kaw-DOHSH) — Hebrew
The primary Hebrew word for "holy" fundamentally means "set apart," "separate," or "distinct." It describes something or someone consecrated for sacred use, separated from the common or profane. When applied to God, qadosh emphasizes His absolute transcendence—He is wholly other, distinct from creation in His being and character. When applied to people or objects, it indicates being set apart for God's service.
ἅγιος
hagios (HAH-gee-os) — Greek
The Greek New Testament equivalent carries similar meaning: "set apart," "sacred," "holy." It describes God's absolute moral purity and separateness from sin. When applied to believers, hagios (often translated "saints") indicates those set apart by God for His purposes. The word implies both positional holiness (declared holy in Christ) and progressive holiness (becoming holy through sanctification).
Semantic Range of Holiness Terms
Aspect Meaning Example Separation Set apart from the common Holy ground (Exodus 3:5) Consecration Dedicated to God's service Holy priests (Exodus 28:41) Moral Purity Free from sin and defilement Holy God (Isaiah 6:3) Transcendence Above and beyond creation "My thoughts are higher than your thoughts" (Isaiah 55:8-9)God's Holiness in Scripture
The Bible presents God's holiness as His defining characteristic, the attribute that encompasses all others.
Old Testament Revelation
The Old Testament repeatedly emphasizes God's holiness as His supreme attribute:
- Isaiah's Vision (Isaiah 6:1-7): Seraphim cry "Holy, holy, holy" (the trisagion)—the only attribute receiving threefold emphasis in Scripture. Isaiah responds with consciousness of sin: "Woe is me! For I am lost; for I am a man of unclean lips."
- The Law: "You shall be holy, for I the LORD your God am holy" (Leviticus 19:2). God's holiness grounds His people's ethical obligation.
- The Psalms: "Who is like you, O LORD, among the gods? Who is like you, majestic in holiness?" (Exodus 15:11). "Holy and awesome is his name!" (Psalm 111:9).
- The Prophets: "For I am God and not a man, the Holy One in your midst" (Hosea 11:9). God's holiness distinguishes Him from all creation.
New Testament Continuity
The New Testament maintains the Old Testament's emphasis on divine holiness:
- Jesus' Teaching: The Lord's Prayer begins "Our Father in heaven, hallowed be your name" (Matthew 6:9)—a petition for God's name to be honored as holy.
- Heavenly Worship: Revelation depicts eternal worship centered on God's holiness: "Holy, holy, holy, is the Lord God Almighty, who was and is and is to come!" (Revelation 4:8).
- Apostolic Witness: Peter quotes Leviticus: "You shall be holy, for I am holy" (1 Peter 1:16). Paul describes God as one "who alone has immortality, who dwells in unapproachable light" (1 Timothy 6:16).
Aspects of God's Holiness
Theologians typically identify two primary dimensions of divine holiness:
1. Majestic Holiness (Transcendence)God's holiness expresses His absolute otherness—He is infinitely above and distinct from creation. This aspect emphasizes God's greatness, glory, and incomparability. "To whom then will you compare me, that I should be like him? says the Holy One" (Isaiah 40:25).
2. Moral Holiness (Purity)God's holiness also denotes His absolute moral perfection—He is completely separate from sin and evil. "You are not a God who delights in wickedness; evil may not dwell with you" (Psalm 5:4). This aspect grounds God's hatred of sin and His perfect righteousness.
"God's holiness is not simply one attribute among others. It is the attribute that qualifies all others. God's love is holy love. His justice is holy justice. His mercy is holy mercy. Holiness is the perfection of His moral character."
— R.C. Sproul, The Holiness of God
The Believer's Call to Holiness
Scripture consistently commands God's people to pursue holiness. This calling operates on multiple levels.
Positional Holiness (Justification)
At conversion, believers are declared holy through Christ's sacrifice. This is sometimes called "positional" or "imputed" holiness:
- "By that will we have been sanctified through the offering of the body of Jesus Christ once for all" (Hebrews 10:10).
- "To the church of God that is in Corinth, to those sanctified in Christ Jesus, called to be saints" (1 Corinthians 1:2).
- "He has reconciled you in his body of flesh by his death, in order to present you holy and blameless and above reproach before him" (Colossians 1:22).
This positional holiness is complete and unchanging—believers are fully accepted in Christ.
Progressive Holiness (Sanctification)
Scripture also commands believers to become holy in practice. This is "progressive sanctification"—the ongoing work of the Holy Spirit making believers increasingly conform to Christ's image:
- "Work out your own salvation with fear and trembling, for it is God who works in you" (Philippians 2:12-13).
- "We all, with unveiled face, beholding the glory of the Lord, are being transformed into the same image" (2 Corinthians 3:18).
- "Strive for the holiness without which no one will see the Lord" (Hebrews 12:14).
This progressive holiness involves both divine enablement and human responsibility.
Ultimate Holiness (Glorification)
Scripture promises that believers will ultimately be made perfectly holy when Christ returns:
- "Beloved, we are God's children now, and what we will be has not yet appeared; but we know that when he appears we shall be like him" (1 John 3:2).
- "He will transform our lowly body to be like his glorious body" (Philippians 3:21).
This ultimate holiness—glorification—completes the sanctification process.
- Abide in Christ: "Apart from me you can do nothing" (John 15:5). Holiness flows from intimate union with Jesus.
- Study Scripture: "Sanctify them in the truth; your word is truth" (John 17:17). God's Word transforms the mind.
- Pray consistently: "Pray without ceasing" (1 Thessalonians 5:17). Prayer maintains communion with the Holy One.
- Walk in the Spirit: "Walk by the Spirit, and you will not gratify the desires of the flesh" (Galatians 5:16).
- Practice spiritual disciplines: Fasting, meditation, worship, and service cultivate holiness.
- Flee sin: "Flee also youthful passions and pursue righteousness" (2 Timothy 2:22). Avoid situations that tempt.
- Engage Christian community: "Iron sharpens iron" (Proverbs 27:17). Fellow believers encourage holiness.
- Serve others: "Through love serve one another" (Galatians 5:13). Love fulfills God's law.
Common Misunderstandings
Several misconceptions about biblical holiness require correction:
1. Holiness as Legalism
Some equate holiness with rule-keeping and external conformity. But biblical holiness flows from the heart, not merely external behavior. Jesus condemned the Pharisees who "clean the outside of the cup and the plate, but inside they are full of greed and self-indulgence" (Matthew 23:25).
2. Holiness as Isolation
Some believe holiness requires separation from all contact with non-believers. Yet Jesus ate with sinners (Matthew 9:10-13) while remaining sinless. Believers are called to be in the world but not of it (John 17:15-18).
3. Holiness as Sinless Perfection
Some expect complete sinlessness in this life. But Scripture acknowledges ongoing struggle with sin (Romans 7:15-25; 1 John 1:8-10). Progressive holiness involves growth, not immediate perfection.
4. Holiness as Optional
Some treat holiness as a "higher life" option for especially devoted Christians. But Scripture commands holiness for all believers: "Strive for the holiness without which no one will see the Lord" (Hebrews 12:14).
Key Takeaways
- Biblical holiness fundamentally means "set apart"—separate from the common for sacred use.
- God's holiness is His defining attribute, emphasizing both transcendence and moral purity.
- Believers experience holiness positionally (justification), progressively (sanctification), and ultimately (glorification).
- Holiness involves both divine enablement (the Spirit's work) and human responsibility (obedience).
- Practical pursuit of holiness includes abiding in Christ, studying Scripture, prayer, and Christian community.
- Common misunderstandings include legalism, isolationism, perfectionism, and treating holiness as optional.
- Holiness is not optional but essential—without it no one will see the Lord.
Frequently Asked Questions
What does holiness mean in the Bible?
Biblical holiness fundamentally means "set apart" or "separate." The Hebrew word "qadosh" and Greek word "hagios" both convey the idea of being distinct from the common or profane. God's holiness refers to His absolute moral purity and transcendence. Human holiness involves being set apart for God's purposes and growing in moral conformity to Christ.
Why does God command us to be holy?
God commands holiness because He Himself is holy (Leviticus 11:44; 1 Peter 1:16). As His image-bearers and covenant people, believers are called to reflect His character. Holiness demonstrates our distinct identity as God's people and enables intimate fellowship with Him.
How do Christians become holy?
Christians experience holiness through sanctification—a process involving both God's work and human response. Positionally, believers are declared holy through Christ's sacrifice (Hebrews 10:10). Progressively, the Holy Spirit transforms believers into Christ's image as they cooperate through spiritual disciplines, obedience, and community (2 Corinthians 3:18; Philippians 2:12-13).
Can Christians achieve perfect holiness in this life?
Scripture indicates that complete sinless perfection is not attainable in this life. 1 John 1:8 states "If we say we have no sin, we deceive ourselves." However, believers should pursue holiness earnestly (Hebrews 12:14), expecting progressive growth in Christlikeness while awaiting final perfection at glorification.
What is the difference between positional and progressive holiness?
Positional holiness refers to the believer's standing before God—declared holy through Christ's sacrifice (justification). This is complete and unchanging. Progressive holiness refers to the ongoing process of becoming increasingly holy in practice (sanctification). This continues throughout the Christian life until glorification.
Is holiness necessary for salvation?
Scripture teaches that holiness is both a result of salvation and necessary for final salvation. Hebrews 12:14 commands believers to "strive for the holiness without which no one will see the Lord." This does not mean holiness earns salvation (which is by grace through faith), but that genuine faith produces holiness as evidence.
Scholarly References
- Barth, Karl. Church Dogmatics, Vol. II/1: The Doctrine of God. T&T; Clark, 1957.
- Calvin, John. Institutes of the Christian Religion. Edited by John T. McNeill. Westminster John Knox Press, 1960.
- Grudem, Wayne. Systematic Theology: An Introduction to Biblical Doctrine. Zondervan, 1994.
- Murray, John. Redemption Accomplished and Applied. Eerdmans, 1955.
- Packer, J.I. Knowing God. InterVarsity Press, 1973.
- Sproul, R.C. The Holiness of God. Tyndale House, 1985.
- Tozer, A.W. The Knowledge of the Holy. HarperOne, 1961.
- Wright, N.T. After You Believe: Why Christian Character Matters. HarperOne, 2010.