From Enemy to Preacher: How Your Past Does Not Define Your Mission

Watch the service and sermon from Acts 9:19–25: From Persecutor to Preacher of Christ. See how Saul’s transformation reminds every believer that our past does not define us—Christ has saved us, strengthened us, and sent us to boldly proclaim His name.

There is something remarkable about the moment a person goes from opposing something with their whole life to becoming its most passionate advocate. That kind of transformation does not happen by human willpower or personal resolve. It happens when the living God intervenes, redirects a life, and commissions a new purpose. That is exactly what we see in Acts 9:19-25, and it is a passage that speaks directly to every believer alive today.

The story centers on Saul of Tarsus, a man who had made it his mission to destroy the early church. He was not a passive critic. He was an active persecutor, dragging believers from their homes and breathing threats against anyone who called on the name of Jesus. And yet, after his dramatic encounter with the risen Christ on the road to Damascus, this same man became one of the most fearless proclaimers of the gospel the world has ever known. The transformation was total, and its implications for us are profound.

One of the first things the passage reveals is that the people around Saul could not get past who he used to be. When he began preaching in the synagogues, the reaction was not celebration. It was confusion and suspicion. Acts 9:21 captures the sentiment of those who heard him, noting that people were astonished and kept pointing to his history as a persecutor. They could not reconcile the man standing before them with the man they had heard about.

This is a deeply human reaction, and it is one that many followers of Christ encounter when they begin to live out their faith publicly. People who knew you before will remind you of who you were. They will question whether your change is genuine. They may even use your past as a reason to dismiss your message.

But here is the truth the passage drives home: the world will keep talking about who you were, while you keep talking about who Jesus is. That is the pattern Saul modeled. He did not argue about his past. He did not defend himself. He simply kept pointing to Christ. The message was never about him. It was always about Jesus as the Son of God, the promised Messiah. When your message is anchored in Christ rather than in your own reputation, no accusation can ultimately silence it.

Paul would later write in Romans 8:33-34 that no accusation can stand against those whom God has justified, because Christ died, rose, and now intercedes for his people. That is not a theological abstraction. It is the living reality of every believer. You have been justified. Your past does not define your present identity in Christ.

Perhaps one of the most challenging and encouraging truths in this passage is the word "immediately." Acts 9:20 says that Saul immediately began proclaiming Jesus in the synagogues. He did not wait until he had attended years of theological training. He did not wait until he had resolved every doubt or reached some imagined level of spiritual maturity. He proclaimed Christ with what he had, right where he was.

This dismantles one of the most common reasons believers give for remaining silent about their faith. We tell ourselves we are not ready, that we do not know enough, that someone more qualified should be doing this. But the New Testament does not present witnessing as the exclusive responsibility of the professionally trained. It presents it as the natural overflow of a life that has been transformed by the gospel.

You do not need to know the entire Bible to share what Christ has done for you. You have a testimony. You know what your life looked like before, and you know what grace has done since. That story, told honestly and humbly, is one of the most powerful tools in the kingdom of God. Start where you are. Saul preached in the synagogues because that was his context. Your context is your workplace, your neighborhood, your family dinner table. That is where God has placed you, and that is where the proclamation begins.

Before Saul went out to preach, he spent time among the disciples in Damascus. Acts 9:19 notes simply that he was with the disciples for some time. This detail is easy to overlook, but it carries enormous weight. The preacher was formed inside the community of believers, not outside of it.

This is not accidental. The New Testament consistently uses the language of family and body to describe the church because those images carry the weight of mutual dependence. A hand does not function well when it is severed from the body. Neither does a believer who tries to live the Christian life in isolation. We grow as witnesses when we live among other witnesses. We are encouraged, corrected, supported, and strengthened through genuine fellowship with other believers.

This is also why the church's role in Saul's story does not end with his preaching. When opposition came and the Jews plotted to kill him, it was his fellow disciples who acted. Acts 9:25 describes how they lowered him through an opening in the wall at night to protect him. The community that formed him also protected him when he was vulnerable. That is what the body of Christ is meant to do.

When you commit to proclaiming Christ faithfully, opposition is not a possibility. It is a certainty. Saul's preaching immediately attracted a murderous conspiracy. Jesus himself warned his followers that the world would hate them because of his name. The apostle Paul would later write to Timothy that anyone who desires to live a godly life will face persecution.

But Acts 9:22 says that Saul grew stronger. The opposition did not diminish him. It revealed the source of his power, which was not his own intellect or courage but the Holy Spirit working in and through him. The same Spirit lives in every believer. The same strength is available to you.

The call is clear. You have been brought from darkness into light. You have been moved from enemy to family member. Now go and tell people about the One who made that possible.

Through this message, God reminds us that in Christ our past no longer defines us, we have been made new and sent as Spirit-empowered witnesses to proclaim Jesus boldly—so how will we respond to His call today?

Choose one or more of the following:

1. Know Your Testimony. Write out your personal testimony in three to five sentences. Practice sharing it clearly and concisely. Focus on what your life was like before Christ, how you came to faith, and what has changed. Share it with one person outside of your church this week.
2. Identify Your Context. Identify two or three people in your everyday life -- at work, in your neighborhood, in your family -- who do not know Christ. Begin praying for them by name daily and ask God to open a door for you to share the gospel with them.
3. Invest in the Word. Set a specific, realistic goal for daily Scripture reading this week. It does not need to be lengthy. Even ten focused minutes in the Word each day is a meaningful step toward knowing the biblical Jesus more deeply and being equipped to share him with others.
4. Deepen Your Fellowship. Reach out to one person in your church this week outside of a scheduled meeting. Have a meal together, make a phone call, or send a message of genuine encouragement. Practice the kind of fellowship that strengthens witnesses.
5. Prepare a Defense. Using Scripture, write down a simple explanation of why you believe Jesus is the Son of God and the only way of salvation. Be prepared to share it in a calm, clear, and gracious way if the opportunity arises.
6. Support Someone Facing Opposition. Is there someone in your church who is currently facing pushback because of their faith -- at work, at home, or in their community? Reach out to them this week with specific, practical support and prayer.