1 Corinthians 9:24

In these verses the apostle hints at the great encouragement he had to act in this manner. He had a glorious prize, an incorruptible crown, in view. Upon this head he compares himself to the racers and combatants in the Isthmian games, an allusion well known to the Corinthians, because they were celebrated in their neighbourhood: "Know you not that those who run in a race run all, but one obtaineth the prize? Co1 9:24. All run at your games, but only one gets the race and wins the crown." And here, I. He excites them to their duty: "So run that you may obtain. It is quite otherwise in the Christian race than in your races; only one wins the prize in them. You may all run so as to obtain. You have great encouragement, therefore, to persist constantly, and diligently, and vigorously, in your course. There is room for all to get the prize. You cannot fail if you run well. Yet there should be a noble emulation; you should endeavour to outdo one another. And it is a glorious contest who shall get first to heaven, or have the best rewards in that blessed world. I make it my endeavour to run; so do you, as you see me go before you." Note, It is the duty of Christians to follow their ministers closely in the chase of eternal glory, and the honour and duty of ministers to lead them in the way. II.

— Matthew Henry's Concise Commentary (public domain)

Know ye not--The Isthmian games, in which the foot race was a leading one, were of course well known, and a subject of patriotic pride to the Corinthians, who lived in the immediate neighborhood. These periodical games were to the Greeks rather a passion than a mere amusement: hence their suitableness as an image of Christian earnestness. in a race--Greek, "in a race course." all . . . one--Although we knew that one alone could be saved, still it Would be well worth our while to run [BENGEL]. Even in the Christian race not "all" who enter on the race win (Co1 10:1-5). So run, that ye may obtain--said parenthetically. These are the words in which the instructors of the young in the exercise schools (gymnasia) and the spectators on the race course exhorted their pupils to stimulate them to put forth all exertions. The gymnasium was a prominent feature in every Greek city. Every candidate had to take an oath that he had been ten months in training, and that he would violate none of the regulations (Ti2 2:5; compare Ti1 4:7-8). He lived on a strict self-denying diet, refraining from wine and pleasant foods, and enduring cold and heat and most laborious discipline. The "prize" awarded by the judge or umpire was a chaplet of green leaves; at the Isthmus, those of the indigenous pine, for which parsley leaves were temporarily substituted (Co1 9:25). The Greek for "obtain" is fully obtain.

— Jamieson-Fausset-Brown Commentary (public domain)