Acts 18:4-6

4And he reasoned and debated in the synagogue every Sabbath, trying to persuade Jews and Greeks;

5but when Silas and Timothy came down from Macedonia (northern Greece), Paul began devoting himself completely to [preaching] the word, and solemnly testifying to the Jews that Jesus is the Christ (the Messiah, the Anointed).

6But since the Jews kept resisting and opposing him, and blaspheming [God], he shook out his robe and said to them, “Your blood (damnation) be on your own heads! I am innocent of it. From now on I will go to the Gentiles.”