1 Coríntios 9

24 Know you not, that they who run in the course, run all, but one taketh to him the victory? So run, that you may take hold.

25 For every man who contendeth from every thing (besides with) holdeth his mind; and they who run (do it) that they may receive a crown that is corruptible, but we one that is incorruptible.

26 I therefore so run, not as about a thing unknown; and so smite I, as not smiting the air;

27 but my body I subdue and make subservient, lest when to others I shall have preached, I my very self shall be rejected.