Ammonius of Alexandria : It must be noted that the prophets do not know everything but only what the Holy Spirit reveals to them. So see how Paul, like a prophet, foretells "that chains and afflictions await me," and that the Ephesians will never see him again and that there will arise among them heretics and some of bad faith, and yet about the first of these he confesses not to know what exactly their end shall be. So although the Lord revealed to him everything else, this one thing he hid from him, namely, what would happen to him after the chains and afflictions, lest, being puffed up and knowing that everything would arrive at such a point, [Paul] fail out of negligence. Instead, so that he, dreading the weakness of the flesh, would beg God to deliver him from trials, the Spirit left this end unclear for him. — CATENA ON THE ACTS OF THE APOSTLES 20.22 Bede : Except that the Holy Spirit testifies to me in every city. When he says through the cities, he clearly shows that what was to come for him, he knew not through himself but revealed by others about himself. Among these was the prophet Agabus, and also those disciples who, persisting in Tyre, warned him through the Spirit not to go up to Jerusalem. — Commentary on Acts Bede : Saying, that bonds and tribulations await me in Jerusalem. So that where he once persecuted the Church, he now fights for the peace of the Church. — Commentary on Acts