The Book of Acts in the Bible — formally known as Acts of the Apostles — was composed by an anonymous author around 80-90 CE. The text never identifies who wrote it. What scholars can establish is that the same person composed both Acts and the Gospel of Luke, producing a two-volume narrative that traces the early Christian movement from the birth of John the Baptist to Paul’s arrival in Rome.
The traditional attribution to Luke, a physician and companion of Paul mentioned in Colossians 4:14, dates not to the text itself but to Irenaeus of Lyon, writing around 180 CE — nearly a century after Acts was composed.
So who actually wrote Acts? The honest scholarly answer is: we don’t know the author’s name. But the text reveals a great deal about him — his education, his sources, his theology, and his ambitions as a writer. Those details have kept scholars debating for centuries.
A Two-Volume Work: Luke and Acts Together
Acts opens with a direct reference to “the first book” (Acts 1:1), and both volumes are dedicated to the same figure, Theophilus. Henry Cadbury, the Harvard scholar who coined the term “Luke-Acts” in 1927, argued that separating the two distorts the author’s unified project. The vocabulary, sentence structure, and theological emphasis are consistent across both texts.
This means any conclusion about who composed Acts applies equally to the Gospel of Luke.
The author drew on the Gospel of Mark as a primary source for the Gospel volume. Since most scholars date Mark to approximately 65-70 CE, and since the author of Luke revised and expanded Mark’s account, the Gospel of Luke must be later — typically placed around 80-85 CE. Acts follows, either composed shortly after or as part of the same literary project. Together, the two volumes account for roughly one-quarter of the entire New Testament by word count, more than any other single author contributed.
The Traditional Attribution: Luke the Physician
Irenaeus identified the author as the Luke mentioned in Paul’s letters — specifically the “beloved physician” of Colossians 4:14. This attribution was accepted throughout the early church and remains the traditional view.
Several factors have led scholars to question it.
The most significant is the tension between how Acts portrays Paul and how Paul describes himself in his own letters. In Galatians, Paul insists he received his gospel directly from revelation, not from any human authority, and he recounts a confrontation with Peter at Antioch that ended without clear resolution. In Acts, Paul is closely tied to the Jerusalem apostles from early in his ministry, and the Antioch dispute is smoothed into the account of the Jerusalem Council (Acts 15). These are not minor narrative variations. They reflect different understandings of Paul’s authority and his relationship to the original apostles.
Martin Hengel has argued that a companion of Paul could still have composed Acts decades later, shaping the narrative according to his own theological concerns and the needs of a later audience. Richard Pervo, on the other hand, has argued that the gap between Paul’s self-presentation and Acts’ portrait is too large for the author to have been a close associate.
What scholars broadly agree on: the author was an educated Greek speaker, probably a Gentile Christian, writing for a Gentile audience. Whether he knew Paul personally remains an open question. Late twentieth-century scholarship tended to emphasize the theological distance between Acts and Paul’s letters; more recent work has noted greater continuities than previously recognized, though the debate is far from settled.
The “We Passages”
Four sections of Acts shift abruptly from third-person narration (“they traveled”) to first-person plural (“we set sail”): Acts 16:10-17, 20:5-15, 21:1-18, and 27:1-28:16.
These passages have been central to the authorship debate since the earliest centuries.
The traditional reading is simple: the author switches to “we” because he was present during those events. If so, the author accompanied Paul on portions of his journeys, which aligns with the identification as Luke, Paul’s travel companion.
Scholars have proposed several alternatives. The author may have incorporated a travel diary — his own or someone else’s — without fully converting the first-person pronouns. This would explain why the “we” sections cluster around sea voyages and travel itineraries rather than theologically significant episodes. Vernon Robbins documented a pattern of first-person narration in ancient Greek and Roman sea voyage literature, arguing that the “we” in Acts follows a recognized literary convention rather than indicating the author’s presence. Susan Praeder pushed back, noting that ancient sea voyage accounts are more varied than Robbins suggested and that the “we passages” in Acts don’t map neatly onto any single genre parallel.
A third possibility: the first-person narration functions as a rhetorical strategy, lending eyewitness authority and narrative immediacy to the dramatic sea voyage to Rome in chapters 27-28.
No single explanation commands universal agreement. The “we passages” remain one of the most discussed features of Acts precisely because they sit at the intersection of historical evidence and literary technique.
What Kind of Text Is Acts?
The question of genre shapes how scholars approach the authorship question. Acts is not a modern historical account, nor is it fiction. It belongs to the genre of ancient historiography — a category with its own conventions, different from what we expect of history today.
Ancient historians composed speeches for their characters. Thucydides did this. Josephus did this. The speeches in Acts — Peter at Pentecost, Stephen before the Sanhedrin, Paul on the Areopagus — follow the same convention. They are the author’s compositions, crafted to serve the narrative’s theological purposes, not transcriptions of what was actually said.
Richard Pervo, in Acts: A Commentary (2009), classifies Acts as something closer to a historical novel — a text that uses historical characters and settings but shapes them with considerable creative freedom. Other scholars, including Eckhard Plumacher, prefer “historical monograph,” emphasizing the text’s genuine engagement with historical memory even as it reshapes that memory. The classification matters because it determines what we expect from the author: strict factual reporting, theological interpretation, or something in between.
The author is selective in what he includes and omits. Paul’s letters — the most important primary sources for reconstructing Paul’s life — are never mentioned in Acts. The disputes Paul describes so urgently in his own correspondence appear in Acts but in significantly altered form. The story Acts tells is one of a united movement guided by the Spirit, spreading in a clear arc from Jerusalem to Rome.
What the Text Reveals About Its Author
The author of Acts never provides his name. But the text itself reveals quite a lot.
He writes sophisticated Greek — with a wider vocabulary than any other New Testament author. He is familiar with the literary conventions of Hellenistic historiography. He knows the Septuagint (the Greek translation of the Hebrew scriptures) intimately and uses it as his primary biblical text, suggesting a Gentile Christian audience more comfortable in Greek than in Hebrew.
His theological interests are distinctive. He emphasizes the Holy Spirit as the driving force behind the church’s expansion. He presents the spread of Christianity as moving in a deliberate geographical arc: from Jerusalem through Judea and Samaria to the ends of the earth (Acts 1:8). And he is concerned throughout the later chapters with showing that Christianity poses no threat to Roman political order — a theme that surfaces again and again in the trial narratives.
He is also a deliberate literary architect. The two volumes of Luke-Acts are structured in parallel: Jesus’s journey to Jerusalem in the Gospel mirrors Paul’s journey to Rome in Acts. The Spirit descends at Jesus’s baptism and again at Pentecost. Scenes from the early chapters of Acts deliberately echo scenes from the Gospel.
Whoever this author was, he was composing a theological narrative about how a movement that began with a Jewish teacher in Galilee became a Mediterranean-wide phenomenon within a single generation. He had sources, he had a theological vision, and he had the literary skill to weave them together into the only surviving narrative account of the early church.
What changes when you read Acts with that authorial profile in mind? Uncanon’s reading experience places Acts in its composition-date sequence with scholarly notes on each passage — the dating evidence, the literary conventions, and the questions scholars continue to ask.