Acts 18:4

18:4 He addressed both Jews and Greeks in the synagogue every Sabbath, attempting to persuade them.

Acts 18:19

18:19 When they reached Ephesus, Paul left Priscilla and Aquila behind there, but he himself went into the synagogue and addressed the Jews.

Acts 18:23

18:23 After he spent some time there, Paul left and went through the region of Galatia and Phrygia, strengthening all the disciples.