acts 9:23 And after that many days were fulfilled, the Jews took counsel to kill him: - Free Bible Online

      23. And after many days were fulfilled, the Jews took counsel to kill him--Had we no other record than this, we should have supposed that what is here related took place while Saul continued at Damascus after his baptism. But in Ga 1:17, 18 we learn from Paul himself that he "went into Arabia, and returned again unto Damascus," and that from the time of his first visit to the close of his second, both of which appear to have been short, a period of three years elapsed; either three full years, or one full year and part of two others. (See on Ga 1:16-18). That such a blank should occur in the Acts, and be filled up in Galatians, is not more remarkable than that the flight of the Holy Family into Egypt, their stay there, and their return thence, recorded only by Matthew, should be so entirely passed over by Luke, that if we had only his Gospel, we should have supposed that they returned to Nazareth immediately after the presentation in the temple. (Indeed in one of his narratives, Ac 22:16, 17, Paul himself takes no notice of this period). But wherefore this journey? Perhaps (1) because he felt a period of repose and partial seclusion to be needful to his spirit, after the violence of the change and the excitement of his new occupation. (2) To prevent the rising storm which was gathering against him from coming too soon to a head. (3) To exercise his ministry in the Jewish synagogues, as opportunity afforded. On his return, refreshed and strengthened in spirit, he immediately resumed his ministry, but soon to the imminent hazard of his life.

JFB.