Acts 18:4-6

4Each Sabbath found Paul at the synagogue, trying to convince the Jews and Greeks alike.

5And after Silas and Timothy came down from Macedonia, Paul spent all his time preaching the word. He testified to the Jews that Jesus was the Messiah.

6But when they opposed and insulted him, Paul shook the dust from his clothes and said, “Your blood is upon your own heads—I am innocent. From now on I will go preach to the Gentiles.”