25 Everyone who competes in the games goes into strict training. They do it to get a crown that will not last, but we do it to get a crown that will last forever.

Read 1 Corinthians 9:25 Using Other Translations

And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible.
Every athlete exercises self-control in all things. They do it to receive a perishable wreath, but we an imperishable.
All athletes are disciplined in their training. They do it to win a prize that will fade away, but we do it for an eternal prize.