Acts 13:44 - Ellicott's Commentary On The Whole Bible

The next sabbath day came almost the whole city together. — It is clear that the Jewish synagogue could not have held such a crowd, and we are led accordingly to the conclusion either that they thronged round portals and windows while the Apostles spoke within, or that the crowd gathered in some open space or piazza in which the synagogue was situated, and were addressed from its entrance. We are left to infer the nature of St. Paul’s discourse from what had preceded, and to assume that it was not recorded, either because St. Luke had notes of one discourse and not of the other, or because it went more or less over the same ground, and therefore did not seem to him to require recording.