As they stretched him out to flog him, Paul said to the centurion standing there, "Is it legal for you to flog a Roman citizen who hasn't even been found guilty?"1
References for Acts 22:25
When the centurion heard this, he went to the commander and reported it. "What are you going to do?" he asked. "This man is a Roman citizen."
The commander went to Paul and asked, "Tell me, are you a Roman citizen?" "Yes, I am," he answered.
Then the commander said, "I had to pay a big price for my citizenship." "But I was born a citizen," Paul replied.
Those who were about to question him2 withdrew immediately. The commander himself was alarmed when he realized that he had put Paul, a Roman citizen,3 in chains.4
References for Acts 22:29
The next day, since the commander wanted to find out exactly why Paul was being accused by the Jews,5 he released him6 and ordered the chief priests and all the Sanhedrin7 to assemble. Then he brought Paul and had him stand before them.
References for Acts 22:30