Acts 22:27-28 English Standard Version
27 So the tribune came and said to him, “Tell me, are you a Roman citizen?” And he said, “Yes.” 28 The tribune answered, “I bought this citizenship for a large sum.” Paul said, “But I am a citizen by birth.”
Paul spoke truly but did not tell all the truth, at least not yet. He was also a citizen of the Kingdom of God. In these verses we see that the Roman Tribune bought his citizenship in Rome with a great price. If Paul could witness to this man about citizenship within the Kingdom of God, the tribune would have understood that someone else paid the price for that citizenship that no one can afford with earthly tributes.
Acts 23:11 The following night the Lord stood by him and said, “Take courage, for as you have testified to the facts about me in Jerusalem, so you must testify also in Rome.”
Now Paul is told what his new mission will be, to preach in Rome.
Acts 24:24-27 English Standard Version
24 After some days Felix came with his wife Drusilla, who was Jewish, and he sent for Paul and heard him speak about faith in Christ Jesus. 25 And as he reasoned about righteousness and self-control and the coming judgment, Felix was alarmed and said, “Go away for the present. When I get an opportunity I will summon you.” 26 At the same time he hoped that money would be given him by Paul. So he sent for him often and conversed with him. 27 When two years had elapsed, Felix was succeeded by Porcius Festus. And desiring to do the Jews a favor, Felix left Paul in prison.
Felix would have set Paul free for a bribe but that would not get Paul sent to Rome, so Paul waited patiently for God to change his circumstances. His trust in God came because Paul was a citizen of that Kingdom first and Rome second.
Acts 26:27-32 English Standard Version
27 King Agrippa, do you believe the prophets? I know that you believe.” 28 And Agrippa said to Paul, “In a short time would you persuade me to be a Christian?”[a] 29 And Paul said, “Whether short or long, I would to God that not only you but also all who hear me this day might become such as I am—except for these chains.” 30 Then the king rose, and the governor and Bernice and those who were sitting with them. 31 And when they had withdrawn, they said to one another, “This man is doing nothing to deserve death or imprisonment.” 32 And Agrippa said to Festus, “This man could have been set free if he had not appealed to Caesar.”
Paul’s witness did not convince Agrippa. If it had, Paul would not have been sent to Rome to fulfill the will of God.