9:24-27 The apostle compares himself to the racers and combatants in the Isthmian games, well known by the Corinthians. But in the Christian race all may run so as to obtain. There is the greatest encouragement, therefore, to persevere with all our strength, in this course. Those who ran in these games were kept to a spare diet. They used themselves to hardships. They practised the exercises. And those who pursue the interests of their souls, must combat hard with fleshly lusts. The body must not be suffered to rule. The apostle presses this advice on the Corinthians. He sets before himself and them the danger of yielding to fleshly desires, pampering the body, and its lusts and appetites. Holy fear of himself was needed to keep an apostle faithful: how much more is it needful for our preservation! Let us learn from hence humility and caution, and to watch against dangers which surround us while in the body.

26. I—Paul returns to his main subject, his own self-denial, and his motive in it.

run, not as uncertainly—not as a runner uncertain of the goal. Ye Corinthians gain no end in your entering idol temples or eating idol meats. But I, for my part, in all my acts, whether in my becoming "all things to all men," or in receiving no sustenance from my converts, have a definite end in view, namely, to "gain the more." I know what 1 aim at, and how to aim at it. He who runs with a clear aim, looks straightforward to the goal, makes it his sole aim, casts away every encumbrance (Heb 12:1, 2), is indifferent to what the by-standers say, and sometimes even a fall only serves to rouse him the more [Bengel].

not as one that beateth the air—instead of beating the adversary. Alluding to the sciamachia or sparring in the school in sham-fight (compare 1Co 14:9), wherein they struck out into the air as if at an imaginary adversary. The real adversary is Satan acting on us through the flesh.