1 Corinthians 9:24-26

Matthew(i) 24 Perceyue ye not howe that they whyche runne in a course, runne all, yet but one receiueth the reward. So runne that ye maye obtayne. 25 Euery man that proueth maysters abstaineth from all thinges. And they do it to obtaine a corruptible croune: but we to obtaine an vncorruptible croune. 26 I therfore so runne, not as an uncertaine thinge. So fight I not as one that beateth the ayer: