1 Corinthians 9:24-27

MSTC(i) 24 Perceive ye not how that they which run in a course, run all, yet but one receiveth the reward? So run that ye may obtain. 25 Every man that proveth masteries abstaineth from all things. And they do it to obtain a corruptible crown: but we to obtain an uncorruptible crown. 26 I therefore so run, not as at an uncertain thing. So fight I, not as one that beateth the air: 27 but I tame my body and bring it into subjection, lest after that I have preached to others, I myself should be a castaway.