Acts 18:4

4He was reasoningδιελέγετοnowδὲinἐνtheτῇsynagogueσυναγωγῇonκατὰeveryπᾶνSabbathσάββατον,persuadingἔπειθένbothτεJewsἸουδαίουςandκαὶGreeksἝλληνας.

And he was reasoning in the synagogue on every Sabbath, persuading both Jews and Greeks.