Acts 18:3-7

and because he was a tentmaker as they were, he stayed and worked with them. Every Sabbath he reasoned in the synagogue, trying to persuade Jews and Greeks. When Silas and Timothy came from Macedonia, Paul devoted himself exclusively to preaching, testifying to the Jews that Jesus was the Messiah. But when they opposed Paul and became abusive, he shook out his clothes in protest and said to them, “Your blood be on your own heads! I am innocent of it. From now on I will go to the Gentiles.” Then Paul left the synagogue and went next door to the house of Titius Justus, a worshiper of God.