Acts 17:1, 11, 13

Paul and Silas traveled through Amphipolis and Apollonia and came to Thessalonica where there was a synagogue.

These people were more willing to listen than the people in Thessalonica. The Bereans were eager to hear what Paul and Silas said and studied the Scriptures every day to find out if these things were true.

But the people in Thessalonica learned that Paul was preaching the word of God in Berea, too. So they came there, upsetting the people and making trouble.