Which event does Acts 2 primarily focus on?

Acts 2 primarily focuses on the birth of the early church, specifically highlighting the events of Pentecost. This pivotal moment marks the outpouring of the Holy Spirit upon the disciples, empowering them to speak in various languages and boldly proclaim the message of Jesus Christ. The chapter details how this miraculous event led to the conversion of about three thousand individuals in one day, illustrating the immediate expansion of the Christian community.

This chapter serves as a foundational moment in Christian history, signifying the establishment of the church as a significant movement. The transformative impact of the Holy Spirit upon the disciples not only equips them for their mission but also fulfills Jesus' promise to send a helper following his ascension. The communal life and practices that developed soon after reflect the essence of the early church’s mission and identity.

The other choices - focusing on events like the conversion of Paul, the Jerusalem Council, or the persecution of Christians - are important in their own right but do not capture the central theme of Acts 2, which is unmistakably the initiation of the church through the empowering presence of the Holy Spirit.