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Holiness in the Bible is not an optional subject for unusually spiritual Christians. God calls every believer to pursue a life that reflects His character.
For years, holiness was a doctrine I knew about. However, during a visit to Jerusalem in 2014, the subject became deeply personal.
I was near the Western Wall during Sukkot, the Feast of Tabernacles. While spending time in a prayer area beside the Wall, I noticed a man reading the entire Bible, including the New Testament.
Eventually, we began talking.
He was an American pastor visiting Israel with a group. Before he left, I asked one of my favorite questions:
“What can I pray for you?”
His answer surprised me.
“Pray Jeremiah 15:19 for me.”
After he walked away, I opened my Bible and read the passage. One phrase immediately caught my attention:
“If you extract the precious from the worthless, you will be as My mouth.”
Although those words were originally spoken to Jeremiah in a specific context, God used that moment to awaken a question in my heart:
What does God consider precious, and what does He want removed from my life?
That question began a deeper journey into biblical holiness.
Since then, holiness in the Bible has become a subject I want to understand and practice more deeply.
What Is Holiness in the Bible?
The basic biblical idea of holiness involves being set apart for God.
God Himself is holy.
Therefore, holiness begins with who He is, not with human rules about appearance or religious behavior.
First Peter 1:15–16 says:
“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.’”
Notice the standard.
God does not say:
“Be holy because your church expects it.”
Instead:
“Be holy, for I am holy.”
Consequently, holiness is fundamentally relational.
We belong to a holy God. Therefore, our lives should increasingly reflect His character.
Biblical holiness includes turning away from sin, but it is more than avoiding bad behavior.
We separate from sin because we have been separated unto God.
Both directions matter.
Holiness is not merely leaving something behind.
It is belonging increasingly and wholeheartedly to Someone.
Holiness in the Bible Begins With God’s Character
We cannot understand Christian holiness until we begin with God.
Isaiah saw the Lord and heard the seraphim cry:
“Holy, holy, holy is the Lord of hosts.” — Isaiah 6:3
God is not merely more moral than we are.
He is completely unique, pure, righteous, glorious, and worthy of worship.
Moreover, His holiness never conflicts with His love, mercy, justice, or goodness.
All of God’s attributes belong perfectly together.
Therefore, the more clearly we see God, the more clearly we begin to see ourselves.
Isaiah’s response was not pride.
It was repentance.
Similarly, a growing awareness of God’s holiness should not make Christians feel spiritually superior to other people.
Instead, it should humble us. Therefore, holiness in the Bible always begins with God’s character before it becomes a command for our conduct.
We realize how desperately we need grace.
At the same time, we discover why sin matters.
Sin is serious because it contradicts the character of the God we love.
Holiness in the Bible Is a Call for Every Christian
Hebrews 12:14 gives a strong command:
“Strive for peace with everyone, and for the holiness without which no one will see the Lord.”
The word strive matters.
Scripture does not describe holiness as something Christians should casually appreciate from a distance.
We pursue it.
Likewise, First Peter says believers should be holy “in all your conduct.”
Therefore, holiness cannot remain confined to Sunday.
It reaches our relationships.
Our sexuality.
Money.
Speech.
Entertainment.
Thought life.
Business practices.
Internet use.
Leadership.
Even the hidden parts of life that nobody else sees belong to God.
Consequently, the question is not simply:
“Which areas of my life look Christian?”
A deeper question is:
“Which areas have I still refused to place under the lordship of Jesus?”
Biblical holiness reaches the entire person.
Holiness Does Not Mean Sinless Perfection in This Life
At this point, we need an important distinction.
Christians are genuinely called to holiness.
However, Scripture does not teach that believers become incapable of sin during this earthly life.
First John 1:8 says:
“If we say we have no sin, we deceive ourselves, and the truth is not in us.”
Therefore, pursuing holiness does not mean claiming sinless perfection.
Instead, the New Testament describes an ongoing work of transformation commonly called sanctification.
The Holy Spirit changes us progressively into greater conformity to Christ.
Consequently, a mature Christian does not say:
“I no longer need repentance.”
Quite the opposite.
The closer we walk with God, the more sensitive we often become to attitudes and behaviors that do not honor Him.
Holiness should therefore produce humility rather than spiritual pride.
We are being transformed.
We have not yet arrived.
Sanctification Is the Holy Spirit’s Work in Us
Christian holiness is impossible through willpower alone.
Certainly, believers make real choices.
We resist sin.
We establish boundaries.
We obey Scripture.
Nevertheless, transformation ultimately depends upon God’s work within us.
Second Thessalonians 2:13 speaks about sanctification by the Spirit.
Likewise, Galatians 5 describes the fruit produced by the Holy Spirit.
Therefore, pursuing holiness is neither passive nor self-powered.
We cooperate with God’s grace.
In other words, holiness in the Bible is not merely human self-improvement; it is transformation produced by God’s grace and the Holy Spirit.
Paul describes this balance in Philippians 2:12–13: believers are called to live obediently because God is at work within them.
That means you can ask for help.
When temptation feels stronger than you, pray.
When sinful habits have become entrenched, seek accountability.
Moreover, return continually to Scripture and depend upon the Holy Spirit.
The Christian life is not:
“Make yourself holy so God will accept you.”
Instead:
“Because you belong to Christ, allow His Spirit to transform the way you live.”
Holiness Means Separating From Sin and Clinging to God
Joshua 23:8 gives us a beautiful picture:
“You shall cling to the Lord your God just as you have done to this day.”
That word cling captures something important.
Holiness is not primarily about building an empty life in which every pleasure has been removed.
Rather, it is about becoming increasingly attached to God.
Yes, we turn away from sin.
However, we turn away because we are turning toward something infinitely better.
Therefore, spiritual growth should include both questions:
What needs to leave my life?
and
How can I draw closer to Christ?
If we focus only on avoiding sin, Christianity can become a list of prohibitions.
On the other hand, if we speak only about intimacy with God while refusing to confront sin, our spirituality becomes sentimental.
Biblical holiness holds both together.
Leave what corrupts you. Cling to the Lord.
Why Holiness in the Bible Is Practical
Holiness becomes real in ordinary decisions.
For that reason, holiness in the Bible must eventually become visible in the ordinary choices we make every day.
For example, what do you watch when nobody is present?
How do you speak about someone who hurt you?
What happens when you have an opportunity to make money dishonestly?
How do you treat your spouse?
What do you allow your mind to dwell upon?
Furthermore, how quickly do you repent when the Holy Spirit convicts you?
These questions bring holiness out of theological abstraction and into everyday life.
Jesus did not call us merely to admire righteousness.
He called us to follow Him.
Therefore, when Scripture exposes something sinful, we should respond.
Confess it.
Repent.
Remove access to temptation when necessary.
Ask another mature believer for help.
Moreover, replace sinful patterns with practices that strengthen your walk with Christ.
Holiness is not achieved by one dramatic moment.
Usually, it grows through thousands of small acts of obedience.
Grace Does Not Compete With Holiness
Some Christians fear that emphasizing holiness will produce legalism.
That danger is real.
However, the solution is not to stop teaching holiness.
Instead, we must teach holiness through the gospel.
Titus 2:11–12 says that God’s grace trains us to renounce ungodliness and live godly lives.
Notice what grace does.
Grace does not merely forgive.
Grace trains.
Therefore, genuine grace never says:
“Sin does not matter.”
Rather, grace says:
“Christ has rescued you. Now learn to live as someone who belongs to Him.”
Legalism tries to earn God’s acceptance through performance.
Biblical holiness begins with God’s grace and then produces grateful obedience.
Consequently, we do not pursue holiness so that Jesus will save us.
We pursue holiness because the Savior is transforming His people.
What About Hebrews 12:14?
The statement that without holiness no one will see the Lord deserves to be taken seriously.
However, we should not read the verse as if salvation were earned by accumulating enough holy behavior.
The New Testament consistently teaches salvation by God’s grace through faith.
At the same time, saving faith produces a transformed life.
Therefore, holiness is not the price we pay for salvation.
It is part of the fruit of belonging to Christ.
A person who claims to follow Jesus while permanently making peace with sin should take Scripture’s warnings seriously.
Yet Christians who struggle, repent, fall, rise again, and continue pursuing Christ should not conclude that every failure means God has abandoned them.
The direction of the life matters.
Are we defending sin?
Or are we fighting it?
Are we moving toward Christ?
Or deliberately moving away from Him?
Biblical holiness is a lifelong pursuit.
How to Pursue Holiness Without Becoming Legalistic
Begin with Jesus, not rules.
First, remember the gospel.
Your standing with God rests on Christ, not your ability to impress Him.
Next, fill your mind with Scripture.
God’s Word teaches us what pleases Him and renews the way we think.
Furthermore, pray for the Holy Spirit’s help.
Do not attempt to overcome deep patterns of sin through determination alone.
Then identify specific areas requiring change.
Vague prayers such as “Lord, make me holier” are good, but specific obedience is better.
Ask:
“What needs to change today?”
Finally, remain in Christian community.
We need encouragement, correction, accountability, and brothers and sisters who will tell us the truth.
Pursuing holiness is deeply personal.
Nevertheless, God never intended it to be completely private.
Separate the Precious From the Worthless
I still remember reading Jeremiah 15:19 near the Western Wall.
Again, that verse has a specific historical context. Therefore, I do not use it as the main doctrinal definition of holiness.
Nevertheless, God used its imagery to confront me personally.
What is precious?
What is worthless?
Those remain useful questions.
Some things in our lives are clearly sinful and need to go.
Other things may not be sinful in themselves, yet they consume our attention and weaken our devotion to God.
Hebrews 12:1 speaks not only about sin but also about laying aside every weight that hinders the race.
Therefore, Christian maturity includes discernment.
Not merely:
“Is this technically allowed?”
But:
“Does this help me run faithfully after Christ?”
That question can transform our choices.
Holiness Begins With Seeing the Beauty of God
If holiness feels like nothing more than endless restriction, we may have missed its center.
God Himself is the treasure.
We separate from sin because sin pulls us away from Him.
Moreover, we pursue purity because we want to know Christ more deeply and reflect His character more faithfully.
Therefore, holiness should ultimately lead to worship.
We see God’s purity.
His beauty.
His goodness.
His mercy.
Then we begin to desire a life that pleases Him.
The goal is not to become a Christian who can proudly say:
“Look how holy I am.”
Instead:
“Look how worthy Jesus is.”
True holiness makes Christ greater in our eyes and makes us increasingly willing to surrender whatever competes with Him.
Pursue Holiness Because God Is Holy
Return to the question from the beginning:
What is holiness in the Bible?
It means belonging to God and increasingly living like someone who belongs to Him.
We separate from sin.
We cling to Christ.
Moreover, we depend upon the Holy Spirit to transform us.
We will not reach sinless perfection in this life.
Nevertheless, we should never make peace with sin.
First Peter still calls us:
“Be holy, for I am holy.”
Therefore, pursue holiness without pride.
Repent without despair.
Depend upon grace without abusing it.
And when you fall, return to Jesus and continue walking.
Holiness is not about proving how good we are. It is about becoming increasingly set apart for the God who is infinitely worthy of our lives.
Take Your Next Step
If you want to understand the seriousness of sin more deeply, continue with A Biblical Definition of Sin.
You can also grow through daily fellowship with God and learn to pray God’s Word for the people around you.
If you need prayer as you pursue freedom and spiritual growth, you can send a prayer request.
I am a blogger, writer, pastor, Director of Zion Romania Bible School, husband to Olguta, a father and, most importantly, a child of God. I also completed my studies at the King’s University where I earned a B.A. in Theology with a concentration in Messianic Jewish Studies. I love Israel and I love the ‘Jewishness’ of the Bible.
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