1 Corinthians 9:27 in the King James Version
But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.
Context
26 I therefore run like that, not aimlessly. I fight like that, not beating the air,
27 but I beat my body and bring it into submission, lest by any means, after I have preached to others, I myself should be disqualified.