Jews from Thessalonica incited people to oppose Paul.

Acts 17:13-15

13 But then the Jews in Thessalonica heard people tell them that Paul was in Berea and that he was preaching the message from God about Jesus. So they went to Berea and told people there that what Paul was teaching was not true. Thus, they caused many of those people to get angry at Paul. 14 So several of the believers in Berea took Paul to the coast to go to another province. But Silas and Timothy stayed in Berea. 15 When Paul and the other men from Berea arrived at the coast, they got on a ship and went to Athens city. Then Paul said to the men who had come with him, “Tell Silas and Timothy to come to me here in Athens as soon as they can.” Then those men left Athens and returned to Berea.