|1 Corinthians 9:24-27
24Do you not know that in a race all runners run, but only one gets the prize? Run in such a way as to get the prize.
25Everyone who competes in the games goes into strict training. They do it to get a crown that will not last; but we do it to get a crown that will last forever.
26Therefore I do not run like a manrunning aimlessly; I do not fight like a man beating the air.
27No, I beat my body and make it my slave so after I have preached to others, I myself will not be disqualified for the prize. (KJV)