Peter Preaches and Three Thousand Believe

Peter rejects the accusation of drunkenness by interpreting the event through Joel 2:28-32. Luke's citation follows the Greek Scriptures closely but introduces the phrase 'in the last days,' making the eschatological interpretation explicit. The Spirit is poured out across social distinctions—sons and daughters, young and old, male and female servants—while prophetic speech becomes the defining sign of the promised age. The cosmic language concerning blood, fire, smoke, sun, and moon is apocalyptic imagery whose precise temporal reference remains debated.

Peter then centers the argument on Jesus of Nazareth, whose mighty works were divinely attested, who was handed over according to God's 'definite plan and foreknowledge,' and whom human agents nevertheless crucified. Divine purpose and human responsibility are therefore held together. Psalm 16 is read christologically: because David died and his tomb remained, Peter argues that David spoke prophetically of the Messiah's resurrection. Psalm 110:1 then interprets Jesus' exaltation to God's right hand and the outpouring of the Spirit as consequences of that exalted status.

The audience is 'cut to the heart' and asks what to do. Peter calls for repentance and baptism in Jesus Christ's name 'for the forgiveness of sins' and promises the gift of the Holy Spirit. Interpretations differ over the syntactical relation of baptism to forgiveness, but Luke clearly presents repentance, baptism, forgiveness, and Spirit reception as closely integrated features of conversion. About three thousand receive the message and are added to the community, marking the first major numerical expansion of the movement.

Acts 2 narrates the fulfillment of Jesus' promise that the disciples would receive power from the Holy Spirit and become his witnesses. The chapter is structured in three movements: the Pentecost outpouring and multilingual speech, Peter's scripturally grounded explanation of the event and proclamation of Jesus' resurrection and exaltation, and a summary portrait of the Jerusalem community formed in response. The setting at Pentecost places the event within Israel's festival calendar and gathers Jews and proselytes from across the Mediterranean world in Jerusalem.

The chapter advances Acts programmatically by presenting the Spirit as the power behind witness, interpreting Jesus' resurrection and exaltation through Israel's Scriptures, and connecting repentance, baptism, forgiveness, and the Spirit with incorporation into the emerging community. The international audience anticipates the geographical expansion announced in Acts 1:8, although the participants here are primarily Jews and converts to Judaism. The closing communal summary depicts apostolic teaching, fellowship, shared meals, prayer, signs, generosity, and temple worship as characteristic features of the earliest Jerusalem movement.