Kehillah in Corinth I 9:26-27

Orthodox Jewish Bible

²⁶ Therefore, I run not as one without a goal that is kovua (fixed, set). I box as not beating the air.

²⁷ But I do more than merely spar with my basar; I pommel it and keep it under strict subjection, so that after I am the maggid to others, I myself will not become declared ineligible.