1 Corinthians 9:19

19FreeἘλεύθεροςforγὰρbeingὢνfromἐκallπάντωνto allπᾶσινmyselfἐμαυτὸνI became servantἐδούλωσα,so thatἵναtheτοὺςmoreπλείοναςI might gainκερδήσω·

For being free from all, I myself became a slave to all, so that I might gain the more.