What does it mean that a Christian is becoming a new man/woman?

Quick answer

When you trust Jesus as your Savior, it means your old life no longer defines you—God gives you a new heart, a new identity, and new life through the Holy Spirit. This transformation of becoming a new man or woman in Christ isn’t self-improvement; it’s God’s work of making you new from the inside out.

WHAT DOES THE BIBLE SAY?

Faith in God renews us. Even in the Old Testament, God provided prophecies about the complete renewal that He would one day give His people (Jeremiah 31:33; Ezekiel 36:26-27, 37:1-14). The New Testament shows the accomplishment of that through belief in Christ. Jesus told Nicodemas that believers must be “born again” to be part of God’s kingdom (John 3:3). What He meant was a spiritual rebirth, a complete transformation from death to life through God’s grace. The New Testament shows that believers are indwelt by the Holy Spirit (Titus 1:5), who renews and sanctifies us. We become new creations in Christ (2 Corinthians 5:17). In this sense, even before the day we are with the Lord in heaven, we are part of His kingdom on Earth, set apart by our new identity in Christ.

FROM THE OLD TESTAMENT

Through the prophet Ezekiel, God promised, “And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh. And I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules” (Ezekiel 36:26-27). Since Christ, those who place their faith in Him become born again, able to worship God in spirit and in truth (cf. John 3:3, 4:24).

Similarly, through the prophet Jeremiah, God spoke of a new covenant in which His law would be written on the hearts and minds of His children (Jeremiah 31:33).

The human heart is “desperately sick” (Jeremiah 17:9), and only God can heal it. David knew this from his own experiences, which is why he pleaded with God, “Create in me a clean heart, O God, and renew a right spirit within me” (Psalm 51:10).

FROM THE NEW TESTAMENT

Jesus told the Pharisee Nicodemas, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God” (John 3:3). Those who accept Christ as Savior and Lord of their lives become as new as if born a second time.

Paul recognized this renewed life: “Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come” (2 Corinthians 5:17).

Paul shared this truth with believers in Ephesus: “But God, being rich in mercy, because of the great love with which he loved us, even when we were dead in our trespasses, made us alive together with Christ—by grace you have been saved” (Ephesians 2:4-5).

Believers are in-dwelt by the Holy Spirit, who renews and sanctifies us. Paul wrote to Titus that God “saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit” (Titus 1:5).

IMPLICATIONS FOR TODAY

People start the New Year with high hopes about change—from the body (“I will lose that last ten pounds!”) to behavior (“I’ll stop the bad language”). Sadly, our hopes are often dashed by mid-January. Our priorities start to shift, our self-control starts to diminish, we get distracted. The bad habits we’d hoped to defeat are so comfortable that they stick with us.

This is also true of our efforts to become “better” people: We can actually become somewhat better on our own in some ways—but because we’re born in sin (Jeremiah 17:9), nothing we do on our own gives us the new life we want (Jeremiah 17:9). Nothing sticks or lasts. Only Christ can renew us, enabling those who are "dead in the trespasses and sins" (Ephesians 2:1) to be resuscitated, to "put on the new self" as Ephesians 4:24 explains it.

Before we meet Jesus and become a Christian, we are controlled by our sin nature. The spirit is not awakened until we trust in Jesus Christ as our Savior and Lord. The Holy Spirit dwells within us, and He begins the sanctification process in us to make us more like Jesus (Romans 8:29). Our priorities change, and our energies are increasingly directed toward godly pursuits. Our actions reflect what Galatians 5:22 calls “the fruit of the Spirit.”

Rebirth, new birth, or being born again is just the beginning. God continues to work in us to make us holy until we see Him face to face (Philippians 1:6; Ephesians 5:27).

UNDERSTAND

Those who accept Christ as Savior of their lives are “born again,” transforming us into new men or women in Christ.

Only through God’s grace, not human effort, can we be renewed.

The Holy Spirit works in believers to sanctify them to become more Christ-like.

REFLECT

In what areas of your life are you still trying to change through effort alone rather than trusting the Holy Spirit to renew you from the inside out?

How does remembering that you are a new creation in Christ reshape the way you view your past sins or present struggles?

Where do you see evidence of God giving you new desires, priorities, or responses that reflect your new identity in Christ?

ENGAGE

How can we recognize the difference between outward behavior change and true heart transformation?

How does understanding that sanctification is a lifelong process where the Holy Spirit transforms believers help us respond with grace and patience toward each other?

How can we encourage each other to live out our new identity in Christ?