NOTES for Act 25:18-19
Representatives of Roman authority, like all pagans of the Roman Empire who had no connection with the Synagogue and no special interest in Judaism, had a very vague idea of matters so significant for the Jewish world. They were all secular people, and they understood little of the finer points of the Jewish religion, or nothing at all.
The one thing that drew everyone's attention was the intrigue surrounding Jesus Himself: He had been executed, and suddenly a man appears claiming that he had seen Him alive, and he was apparently not the only one. It would seem that beginning the preaching in such a criminal-adventurous context was not easy: the preaching about the Kingdom began with an almost detective story, at least in the listeners' perception. Yet it was an opportunity for testimony, and Paul did not lose it. He was invited to speak, and he testified. This is one of the traits of every servant of God, and especially of an apostle: he is always occupied with only one task.
Everything else - different places, different platforms, different situations that make it possible to speak - is only a form for the main task. Even in court Paul speaks of one thing: the Kingdom. Everything else has no meaning for him. It would seem that in such a case a person must inevitably turn into a fanatic of one idea or one thought, obsessively preoccupied with it. And that really does happen if service becomes a function for a person, something he is occupied with, something he does.
Service that has become activity is a serious spiritual danger for everyone. Only the one who, like Paul and many other true servants, lives by what he does can avoid that danger. For such a servant, his service is not an activity and not a job, though outward signs may resemble both, but the mode of his own existence. As a philosopher would say, an anthropological mode of being.
Simply put, a person does one thing or another not because he must, is obligated, or promised something to God and people, but because he has no other way to exist in this world. Then persuasiveness remains, and fanaticism does not appear: it usually arises precisely from the rupture between outward activity, functioning, and that deep Life which alone is worth writing with a capital letter. The Life where God and the Kingdom are. Paul always lived this way, and when he did not, he strove for such a life. That is why he became God's servant and a true witness of the Kingdom.