What does the book of Acts teach?

The book of Acts is not an isolated work: it was written as a continuation of the Gospel of Luke, addressed to the same recipient, Theophilus. Where the Gospel narrates what Jesus began to do and teach, Acts shows how this work continued — now through the apostles, moved by the Holy Spirit.

The original Greek title, Praxeis Apostolon ("The Acts of the Apostles"), already reveals the purpose: to document the concrete actions of those who were sent by Christ. Some ancient manuscripts even explicitly identify Luke as the author, with the inscription "The Acts of the Apostles by Luke, the Evangelist".

Although Peter and Paul are the main protagonists, the book also records the actions of figures like Stephen and Barnabas — men who, though not among the Twelve, were endowed with the Holy Spirit and worked in the same mission. Acts thus serves as a window into the apostolic work in multiple regions of the ancient world.

The primitive Christian tradition attributes Acts to Luke, a physician and companion of Paul. The dating of the book is debated, but there is an internal clue: the use of the verb in the past tense to describe place names suggests that Luke wrote before the destruction of Jerusalem in 70 AD, since after this event many sacred history-related toponyms fell into disuse.

The historical reliability of the text has been rigorously studied over the centuries. Archaeological research has repeatedly confirmed the accuracy of geographical details, titles of authorities, and local customs described in Acts — which led initially skeptical scholars to recognize the historical value of the work.

Pentecost and the baptism of three thousand (Acts 2)

On the fiftieth day after Passover, the Holy Spirit descended upon the disciples gathered in Jerusalem. Peter preached publicly for the first time, and about three thousand people responded to the call, were baptized, and began to devote themselves to apostolic teaching, fellowship, the breaking of bread, and prayer. This moment is considered the visible birth of the Christian Church.

The healing of the lame man at the Beautiful Gate (Acts 3)

Peter and John, on their way to the temple for the three o'clock prayer, encountered a man born lame who was begging at the Beautiful Gate. Peter declared: "I have no silver or gold, but what I do have I give you: in the name of Jesus Christ of Nazareth, walk." The man was healed immediately. The episode demonstrates that the miracles of Jesus continued through the apostles — and Peter was careful to redirect all the crowd's admiration to Christ, not to himself.

The speech at the Areopagus (Acts 17)

In Athens, Paul was taken to the Areopagus — the city's philosophical court — to explain his doctrine. Before an audience accustomed to debating new ideas, he started from the altar dedicated to "the unknown God" to announce the Creator of all things, who does not dwell in temples made by human hands. The speech culminated in the announcement of Jesus' resurrection and the call to repentance — a model of how the Gospel can dialogue with any culture without losing its core.

An intriguing hypothesis, discussed by scholars, is that the book of Acts was written with a legal function: to serve as a formal defense of Paul before the Roman court. According to this reading, Luke — a physician and possibly familiar with law — structured the narrative to demonstrate that Paul had committed no crime against Rome and that the Christian movement was not a threat to the Empire.

This hypothesis is reinforced by the emphasis the book places on Paul's multiple defenses before authorities (Felix, Festus, Agrippa) and by the fact that, on each occasion, no criminal charge was sustained. The book ends with Paul in Rome, preaching freely — an ending that can be read as the final argument of his innocence.