1 Corinthians 9:21-23

21to those who are 1without the Law, I became 2as one without the Law, though not being without the law of God but 3under the law of Christ, so that I might gain those who are without the Law. 22To the 4weak I became weak, that I might gain the weak; I have become 5all things to all people, 6so 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.