Acts 13:42-44

42As Paul and Barnabas were leaving [the synagogue], the people kept begging that these things might be spoken to them on the next Sabbath.

43When the congregation of the synagogue had been dismissed, many of the Jews and the devout converts to Judaism followed Paul and Barnabas, who, talking to them were urging them to continue in the grace of God.

44On the next Sabbath almost the entire city gathered together to hear the word of the Lord [about salvation through faith in Christ].