Acts 21 is the final chapter of the book of Acts and it is a fitting conclusion to the story of the early church. In this chapter, Paul is on his way to Jerusalem, despite warnings from the Holy Spirit and his companions. He is determined to go to Jerusalem and fulfill his mission to bring the gospel to the Gentiles.
When Paul arrives in Jerusalem, he is welcomed by the church and is warmly received. He is then taken to the temple to offer a sacrifice, which is a sign of his commitment to the Jewish faith. After this, Paul is arrested and taken to the Roman governor, Felix.
Paul is then taken to Caesarea, where he is held in prison for two years. During this time, he is visited by many people, including Felix, Festus, and Agrippa. Paul is able to share his faith with them and is eventually released.
The book of Acts ends with Paul on his way to Rome, where he will continue to preach the gospel. This is a fitting conclusion to the book of Acts, as it shows that Paul's mission to bring the gospel to the Gentiles was successful. It also shows that the early church was able to spread the gospel to the ends of the earth, despite persecution and opposition.