Though I am free of obligation to anyone, I make myself a slave to everyone, to win as many as possible.
Though free from all, Paul says he has made himself a slave to all, to win as many as possible.
It states the missionary principle governing the section.
19Though I am free of obligation to anyone, I make myself a slave to everyone, to win as many as possible. 20To the Jews I became like a Jew, to win the Jews. To those under the law I became like one under the law (though I myself am not under the law), to win those under the law. 21To those without the law I became like one without the law (though I am not outside the law of God but am under the law of Christ), to win those without the law. 22To the weak I became weak, to win the weak. I have become all things to all people so that by all possible means I might save some. 23I do all this for the sake of the gospel, so that I may share in its blessings.