Who Wrote the Book of Acts? Luke, the Beloved Physician

The Book of Acts was written by Luke, the same man who wrote the Gospel of Luke. He was a physician and a companion of the apostle Paul. The book itself never names its author, but the evidence is strong and has been accepted by most Christians since the earliest centuries. Acts begins by addressing a man named Theophilus, just as the Gospel of Luke does, and it refers to “my first book” (Acts 1:1). That first book is the Gospel of Luke. So the two volumes share one author. The early church historian Eusebius and other ancient writers all say Luke wrote them. Internal clues in the text—the “we” passages—show that the writer was with Paul on parts of his journeys. This article explains who Luke was, how we know he wrote Acts, and what the book is about.

Who was Luke, and what do we know about him?

Luke was a Gentile Christian, likely the only New Testament writer who was not Jewish. Paul calls him “the beloved physician” in Colossians 4:14. He was a careful historian. His Gospel opens with a formal preface explaining that he investigated everything from the beginning so he could write an orderly account (Luke 1:1-4). That same careful style continues in Acts. Luke was also a loyal companion. He traveled with Paul on several missionary journeys and stayed with him during his final imprisonment in Rome. Near the end of Paul’s life, Paul wrote, “Only Luke is with me” (2 Timothy 4:11).

How do we know Luke wrote the Book of Acts?

Several lines of evidence point to Luke.

First, the book itself ties to the Gospel of Luke. Both are addressed to Theophilus. In Acts 1:1 the writer refers to his earlier volume about all that Jesus began to do and to teach. That matches the Gospel of Luke exactly.

Second, the “we” passages. In several sections of Acts, the writer shifts from “they” to “we,” showing he was present. These include Acts 16:10-17, 20:5-15, 21:1-18, and 27:1-28:16. In those sections, the author is traveling with Paul. Since the author is not Paul (Paul is spoken of in the third person), it must be one of his companions. Luke fits perfectly.

Third, early church tradition. From the second century onward, Christian writers consistently name Luke as the author. The Muratorian Fragment (about A.D. 170) and Irenaeus both say so. No ancient source suggests anyone else.

Fourth, the style and vocabulary. The Greek of Luke and Acts is very similar—more like polished Greek than the other Gospels. The medical language that appears in both books also fits a physician.

What is the Book of Acts about?

Acts is the sequel to Luke’s Gospel. It tells what happened after Jesus ascended to heaven. It covers about thirty years, from the ascension to Paul’s arrival in Rome. The book shows how the Holy Spirit empowered the apostles to spread the gospel “in Jerusalem, and in all Judea and Samaria, and to the ends of the earth” (Acts 1:8).

Key events include:

The day of Pentecost, when the Holy Spirit came on the disciples (Acts 2).
The healing of a lame man and the growth of the church in Jerusalem (Acts 3-4).
The stoning of Stephen, the first Christian martyr (Acts 7:54-60).
The conversion of Saul of Tarsus, who became Paul (Acts 9).
The Council of Jerusalem, which decided that Gentile believers did not need to become Jews (Acts 15).
Paul’s missionary journeys and his eventual arrest and voyage to Rome (Acts 16-28).

Acts is not a complete history of the early church. It focuses mainly on Peter (chapters 1-12) and Paul (chapters 13-28). But it gives us the essential story of how the gospel went from a small group in Jerusalem to the heart of the Roman Empire.

When and where was Acts written?

The book ends with Paul in Rome under house arrest, preaching freely (Acts 28:30-31). That imprisonment lasted about two years, around A.D. 60-62. Since the story stops there, many scholars think Luke wrote Acts around A.D. 61-63, possibly from Rome. Some suggest a later date, after Paul’s death, but the abrupt ending fits an early date. The place is likely Rome, where Luke was with Paul.

Why does it matter that Luke wrote Acts?

Knowing the author helps us trust the book. Luke was an eyewitness to many events and a careful researcher for the rest. He traveled with Paul, so he knew the details of Paul’s journeys firsthand. He also had access to other witnesses, like Peter and James. The early church accepted his account as true. For us, Acts is not just ancient history; it is the story of how the risen Christ built His church through the Holy Spirit. It shows that the gospel is for all people, Jew and Gentile alike. It encourages us to trust the same Spirit who worked then and still works today.

If you want to study Acts further, read it alongside Luke’s Gospel. Pray for understanding, and discuss it with your local church. The book of Acts is God’s Word, and it has much to teach us about faith, courage, and the mission of the church.

Common questions

Did Luke actually write the Book of Acts?

Yes, the evidence strongly supports Luke as the author. The book connects to the Gospel of Luke, contains “we” passages showing the writer traveled with Paul, and early church tradition unanimously names Luke. Most Bible scholars, both ancient and modern, accept this.

Was Luke a Gentile?

Yes, Luke was likely a Gentile, which makes him unique among New Testament writers. Paul refers to him as “the beloved physician” in Colossians 4:14, and his Greek style suggests he was well-educated in Greek culture.

What is the main message of the Book of Acts?

Acts shows how the Holy Spirit empowered the apostles to spread the gospel from Jerusalem to Rome. It emphasizes that salvation is for all people, both Jews and Gentiles, and that the church grows through the power of the risen Christ.

When was the Book of Acts written?

Most scholars date Acts around A.D. 61-63, shortly after the events it describes. The book ends with Paul in Rome under house arrest, which fits that time period. Some suggest a slightly later date, but the early date is widely accepted.