1 Corinthians 9:24-27 - The Need For Self-Discipline
24 Do you not know that those who run in the stadium all run, but one receives the prize? Run in such a way that you may win. 25 And everyone who competes exercises self-control in all [things]. Thus those [do so] in order that they may receive a perishable crown, but we an imperishable [one]. 26 Therefore I run in this way, not as [running] aimlessly; I box in this way, not as beating the air. 27 But I discipline my body and subjugate [it], lest somehow [after] preaching to others, myself should become disqualified.