As with the news of Peter’s actions in Caesarea (Acts 11:1), so the news of church growth in Antioch would have trickled down to Jerusalem. With Antioch being the capital city of the Roman province of Syria, it is likely that there were a number of people who travelled through it.
22 Le bruit en parvint aux oreilles des membres de l'Eglise de Jérusalem, et ils envoyèrent Barnabas jusqu'à Antioche.