Prove You’ve Changed — The Evidence of a Transformed Life

Acts 26:20 — “All must repent of their sins and turn to God—and prove they have changed by the good things they do.”

When the Apostle Paul stood before King Agrippa, he wasn’t defending himself as much as he was preaching the gospel. His message was simple, powerful, and universal: everyone must repent, turn to God, and live in a way that proves their repentance is real.

This verse captures the heart of true Christianity. Paul wasn’t calling people to religion, ritual, or reputation—he was calling them to transformation.

1. Repentance Is More Than Regret

Many people confuse repentance with feeling sorry. But repentance is more than emotion—it’s a change of direction. The Greek word metanoia means a change of mind, heart, and purpose.

Paul said, “All must repent.” That includes the rich and poor, moral and immoral, religious and nonreligious. Repentance means turning away from sin—not just because it hurts us, but because it grieves God. It’s like making a U-turn on a road headed toward destruction and choosing to walk with God instead.


2. Turning to God

Repentance is not only about turning from something—it’s about turning to Someone.
Paul’s message didn’t stop with, “Repent of your sins.” He added, “Turn to God.”

This is the life-changing difference between mere guilt and real grace. Guilt looks backward; grace looks upward. When we turn to God, we find forgiveness, mercy, and power to live differently. The same Jesus who forgives us also strengthens us to walk in righteousness.


3. Proving the Change

Paul’s third phrase is often forgotten: “Prove they have changed by the good things they do.”
That’s the fruit of repentance. True faith always shows itself in actions.

John the Baptist said the same thing: “Produce fruit in keeping with repentance” (Luke 3:8).
James said, “Faith without works is dead” (James 2:26).

We’re not saved by good works, but we are saved for good works (Ephesians 2:10). The changed heart naturally produces a changed life—just as a healthy tree naturally produces good fruit.

So what does this look like?

  • Forgiving others when you used to hold grudges.
  • Serving people when you used to ignore their needs.
  • Telling the truth when you used to twist it.
  • Loving God when you used to live for yourself.

Good deeds don’t earn God’s favor—they reveal it.


4. Living Proof of Grace

Paul’s own life was the best sermon on repentance. Once a persecutor of Christians, he became a preacher of Christ. His story was the evidence of God’s mercy and the power of a changed heart.

Every believer has the same calling: to be living proof of God’s grace. People should be able to look at our lives and say, “Something’s different. That person has been with Jesus.”


Final Thought

Repentance is the doorway into a new life with God. But it’s not a one-time event—it’s a lifelong posture of humility and surrender. Each day, we keep turning from sin and turning toward God, proving the reality of our faith through love, integrity, and good works.

Let’s live in such a way that our lives testify—without words—that Jesus still changes hearts.


About Mark Cole

Jesus follower, Husband, Grandfather, Worship Leader, Writer, Pastor, Teacher, Founding Arranger for Praisecharts.com, pickleball player, blogger & outdoor enthusiast.. (biking, hiking, skiing). Twitter: @MarkMCole Facebook: mmcole
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