Lux Domini

Guide

The early church in Acts

The book of Acts records how a handful of frightened disciples became a movement that turned the Roman Empire upside down.

Acts of the Apostles picks up where the Gospels leave off. Jesus has ascended. The disciples are waiting in Jerusalem. Then the Holy Spirit comes at Pentecost, and everything changes. Within a generation, the gospel has spread from Jerusalem to Rome, crossing every barrier of ethnicity, class, and geography.

This guide traces the story of Acts, highlights its key turning points, and shows what the early church’s experience teaches about faith, community, and mission.

Pentecost and the Jerusalem church

The Spirit’s arrival at Pentecost was the birthday of the church. Disciples spoke in tongues understood by people from across the known world. Peter preached, and three thousand were baptised in a single day. The new community shared possessions, broke bread together, and worshipped in the temple.

But this early unity quickly faced pressure. Ananias and Sapphira lied about their giving and died. The apostles were arrested and beaten. Stephen was stoned. The church discovered that faithfulness to Jesus would cost everything — and that persecution would scatter the gospel to places it would never otherwise have reached.

The Gentile breakthrough

The most revolutionary event in Acts is the inclusion of Gentiles. It began with Philip baptising an Ethiopian eunuch, continued with Peter’s vision of unclean animals and his visit to Cornelius, and exploded through Paul’s missionary journeys. Each step was controversial. Jewish believers struggled to accept that God was saving pagans without requiring them to become Jews first.

The Jerusalem council in Acts 15 settled the question: Gentile believers did not need to be circumcised or keep the Mosaic law. This decision shaped the future of Christianity. Without it, the faith would have remained a sect within Judaism rather than becoming a universal movement.

Paul’s journeys and the road to Rome

Paul’s three missionary journeys carried the gospel across Asia Minor and into Europe. He planted churches in Philippi, Thessalonica, Corinth, Ephesus, and many other cities. His method was consistent: start in the synagogue, preach Christ from the Hebrew Scriptures, and when rejected, turn to the Gentiles.

Acts ends with Paul under house arrest in Rome, "preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him." The open ending is deliberate: the story of Acts is not finished. The church’s mission continues wherever believers carry the gospel.

Key passages

Acts 2:4

"And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance."

They were all filled with the Holy Ghost, and began to speak with other tongues.

Acts 1:8

"But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth."

Ye shall be witnesses unto me both in Jerusalem... and unto the uttermost part of the earth.

Acts 28:31

"Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him."

Preaching the kingdom of God... with all confidence, no man forbidding him.