In Athens, idols distressed Paul, so he talked to many people about Jesus.

Acts 17:16-17

16 In Athens, Paul waited for Silas and Timothy to arrive. In the meantime, he walked around in the city. He became very distressed/disturbed because he saw that throughout [HYP] the city there were many idols. 17 So he went to the Jewish meeting place and talked about Jesus with the Jews, and also with the Greeks who had accepted what the Jews believe. He also went to the public square/center every day and talked to the people whom he met there.