1 Corinthians 9:25-27

EJ2000(i) 25 And every man that strives for the mastery is temperate in all things. Now they do it to obtain a corruptible crown, but we, an incorruptible one. 26 I therefore so run, not as unto an uncertain thing; so I fight, not as one that beats the air; 27 but I keep my body under, and bring it into subjection, lest preaching to others, I myself should become reprobate.