What does Acts 25:21 mean?

Concerning whom, when the accusers stood up, they brought no charge of such things as I supposed;

but had certain questions against him about their own religion, and about one Jesus, who was dead, whom Paul affirmed to be alive.

Being perplexed how to inquire concerning these things, I asked whether he was willing to go to Jerusalem and there be judged concerning these matters.

Agrippa said to Festus, “I also would like to hear the man myself.” “Tomorrow,” he said, “you shall hear him.”

So on the next day, when Agrippa and Bernice had come with great pomp, and they had entered into the place of hearing with the commanding officers and the principal men of the city, at the command of Festus, Paul was brought in.

Festus said, “King Agrippa, and all men who are here present with us, you see this man, about whom all the multitude of the Jews petitioned me, both at Jerusalem and here, crying that he ought not to live any longer.