Acts 22:24-29

24the tribune ordered him to be brought into the barracks, saying that he should be examined by flogging, to find out why they were shouting against him like this.

25But when they had stretched him out for the whips, Paul said to the centurion who was standing by, "Is it lawful for you to flog a man who is a Roman citizen and uncondemned?"

26When the centurion heard this, he went to the tribune and said to him, "What are you about to do? For this man is a Roman citizen."

27So the tribune came and said to him, "Tell me, are you a Roman citizen?" And he said, "Yes."

28The tribune answered, "I bought this citizenship for a large sum." Paul said, "But I am a citizen by birth."

29So those who were about to examine him withdrew from him immediately, and the tribune also was afraid, for he realized that Paul was a Roman citizen and that he had bound him.