Acts continues the story of Christianity in the 1st century, beginning with Jesus' Ascension to Heaven. The early chapters, set in Jerusalem, describe the Day of Pentecost (the coming of the Holy Spirit) and the growth of the church in Jerusalem. Initially the Jews are receptive to the Christian message, but soon they turn against the followers of Jesus. Rejected by the Jews, under the guidance of the Apostle Peter the message is taken to the Gentiles. The later chapters tell of Paul's conversion, his mission in Asia Minor and the Aegean, and finally his imprisonment in Rome, where, as the book ends, he awaits trial. Courtesy Wikipedia.org