This key verse shows how the good news about Jesus extended from place to place:
It began in Jerusalem and Judea (1:6–8:1).
It then came to Samaria (8:4–25).
Next, it went to Antioch in Syria (11:19–30).
Later, it extended across the Mediterranean Sea to Rome (13:1–28:31).
Christ gave a similar mission to Saul of Tarsus (9:15). At first, Saul was well-known for persecuting Jewish Christians. After his encounter with Christ, he became the main person spreading the gospel to non-Jews (Gentiles).
when the Holy Spirit comes: The Holy Spirit provided the power for all these missionary efforts for the good news about Jesus.