1 Corinthians 9:19-23

19For though I am 1free from all people, I have made myself 2a slave to all, so that I may 3gain more. 204To the Jews I became as a Jew, so that I might gain Jews; to those who are under the Law, I became as one under the Law, though 5not being under the Law myself, so that I might gain those who are under the Law; 21to those who are 6without the Law, I became 7as one without the Law, though not being without the law of God but 8under the law of Christ, so that I might gain those who are without the Law. 22To the 9weak I became weak, that I might gain the weak; I have become 10all things to all people, 11so that I may by all means save some. 23I do all things for the sake of the gospel, so that I may become a fellow partaker of it.