The Book of Acts

Acts 1:8 is the table of contents of the whole book: "But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth."

This gives the book's three-part geographic structure:

-- Jerusalem (chapters 1-7): Pentecost, the early Jerusalem community, Peter's preaching, the persecution beginning with Stephen

-- Judea and Samaria (chapters 8-12): Philip's mission to Samaria, Saul's conversion, Peter and Cornelius (the first Gentile conversion), the Antioch church established

-- To the ends of the earth (chapters 13-28): Paul's three missionary journeys (13-14; 15:36-18:22; 18:23-21:17), the Jerusalem Council (15), Paul's arrest and trials (21-26), the voyage to Rome (27-28)

The book ends with Paul in Rome, the capital of the empire, "proclaiming the kingdom of God and teaching about the Lord Jesus Christ with all boldness and without hindrance" (28:31). The Greek word is akolutos, "without hindrance," a word with no parallel in Greek literature. This is the book's triumphant final note: the gospel has reached Rome, and nothing stops it.

The protagonist of Acts is the Holy Spirit. The Spirit comes at Pentecost (2:1-4), directs the church's mission (8:29; 10:19; 13:2; 16:6-7), fills speakers before hostile audiences (4:8; 7:55), and is the power source for every advance of the gospel. Luke is writing a theology of the Spirit's mission through the church.

Pentecost (from Greek pentekoste, fiftieth; the feast of Weeks / Shavuot in the Jewish calendar, falling 50 days after Passover/firstfruits, Leviticus 23:15-21; Numbers 28:26-31) is the moment of the Spirit's outpouring on the gathered community of approximately 120 (Acts 1:15):

Acts 2:1-4: "When the day of Pentecost arrived, they were all together in one place. And suddenly there came from heaven a sound like a mighty rushing wind, and it filled the entire house where they were sitting. And divided tongues as of fire appeared to them and rested on each one of them. And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance."

The crowd of diaspora Jews gathered in Jerusalem for the feast (2:5-11) hears them speaking in their own languages, the reversal of Babel (Genesis 11:7-9, "there the LORD confused the language of all the earth"; Acts 2, YHWH gathers all languages in understanding).

Peter's Pentecost sermon (2:14-41) is the first Christian sermon:

-- Joel 2:28-32 is being fulfilled: "this is what was uttered through the prophet Joel" (2:16), the Spirit's outpouring is the promised eschatological gift

-- Jesus of Nazareth: "a man attested to you by God with mighty works and wonders and signs" (2:22), handed over by the definite plan and foreknowledge of God (2:23), crucified and killed, raised by YHWH (2:24, "because it was not possible for him to be held by it"), Psalm 16:10 cited

-- The resurrection-and-exaltation: "God has made him both Lord and Christ, this Jesus whom you crucified" (2:36), the Kyrios/Lord title echoing the Septuagint's use of Kyrios for YHWH

-- The response: repent and be baptized in the name of Jesus Christ for the forgiveness of sins and receive the Holy Spirit (2:38), the four elements of the Pentecost invitation

-- Result: "there were added that day about three thousand souls" (2:41)

The two events that most shape the second half of Acts:

Saul's conversion (9:1-19; retold by Paul in 22:6-16 and 26:12-18): "Saul, Saul, why are you persecuting me?", the identification of the risen Jesus with his persecuted community. Saul of Tarsus, "breathing threats and murder against the disciples of the Lord" (9:1), encounters the risen Christ on the road to Damascus. Three days of blindness; Ananias's ministry; "immediately something like scales fell from his eyes, and he regained his sight" (9:18). YHWH's evaluation of Saul before Ananias: "he is a chosen instrument of mine to carry my name before the Gentiles and kings and the children of Israel" (9:15). The persecutor becomes the proclaimer.

The Antioch church (11:19-26): The church at Antioch is where the followers of Jesus are first called "Christians" (11:26, Christianous, Christ-ones; the Antiochians may have coined it as a social description of this group attached to the figure of Christos). Antioch becomes the base for Paul's missionary journeys: "While they were worshiping the Lord and fasting, the Holy Spirit said, 'Set apart for me Barnabas and Saul for the work to which I have called them'" (13:2). Mission originates in worship.

The Jerusalem Council (Acts 15): the foundational decision of the early church on the status of Gentile believers. Do Gentiles need to be circumcised and keep the law of Moses (15:1-5)? Peter's testimony (his Cornelius experience), Barnabas and Paul's report, and James's conclusion from Amos 9:11-12: Gentiles come in as Gentiles. The Gentile mission is confirmed.

The Sanctum reads Acts as the story of the Spirit continuing what Jesus began (Acts 1:1, "In the first book, O Theophilus, I have dealt with all that Jesus began to do and teach"). The church is not a replacement organization but the ongoing mission of the risen Christ through his Spirit-filled people. The geographic structure (Jerusalem → Judea and Samaria → ends of the earth) is still in progress: the book ends without ending because the mission continues. The final word akolutos (without hindrance) is still true.