For though I am free from all men, I have made myself a servant to all, that I might win the more; 20 and to the Jews I became as a Jew, that I might win Jews; to those who are under the law, as under the law, that I might win those who are under the law; 21 to those who are without law, as without law (not being without law toward God, but under law toward Christ), that I might win those who are without law; 22 to the weak I became as weak, that I might win the weak. I have become all things to all men, that I might by all means save some. 23 Now this I do for the gospel’s sake, that I may be partaker of it with you. — 1 Corinthians 9:19-23.
Paul makes himself a servant (or slave) to everyone, in order to be a soul-winner. He fashions his lifestyle to identify with the lost he seeks to win, without participating in their sins, and sinks his personal preferences. His priority is preaching the gospel to those who are Jews, to those who are not Jews, to the weak, and, in fact, to all men. For the sake of the gospel and for the sake of the Corinthians, he declares that ‘I have become all things to all men, that I might by all means save some’. [The Bible Panorama.]