Acts 25:10,11,21-27
Then said Paul, I stand at Caesar's judgment seat, where I ought to be judged: to the Jews have I done no wrong, as you very well know.
Nave's Topical Index—AKJV

Acts 26:32
Then said Agrippa to Festus, This man might have been set at liberty, if he had not appealed to Caesar.
Nave's Topical Index—AKJV

Acts 28:19
But when the Jews spoke against it, I was constrained to appeal to Caesar; not that I had ought to accuse my nation of.
Nave's Topical Index—AKJV