What does Ephesians 3:1 mean?

Because of all this, I, Paul, am stuck in prison for the sake of you non-Jewish folks, since I belong to Jesus the Messiah. Ephesians 3:1 - Modern Text Bible

(Paul is reminding the Ephesians that he’s in jail because he’s been sharing the good news with people who aren’t Jewish, and he’s doing it for their benefit.)