Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where was a synagogue of the Jews:

When they had passed through Amphipolis and Apollonia, they came to Thessalonica, where there was a Jewish synagogue.

And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures,

As was his custom, Paul went into the synagogue, and on three Sabbaths he reasoned with them from the Scriptures,

Opening and alleging, that Christ must needs have suffered, and risen again from the dead; and that this Jesus, whom I preach unto you, is Christ.

explaining and proving that the Christ had to suffer and rise from the dead. “This Jesus I am proclaiming to you is the Christ,” he declared.