For when I was a free man to all, I made myself the servant of all, so that I might gain all the more
Other versions
King James Version
For though I be free from all men, yet have I made myself servant unto all, that I might gain the more.English Standard Version
For though I am free from all, I have made myself a servant to all, that I might win more of them.New International Version
Though I am free and belong to no man, I make myself a slave to everyone, to win as many as possible.