"And everyone who competes for the prize is temperate in all things. Now they do it to obtain a perishable crown, but we for an imperishable crown." I Corinthians 9.25
Competitive athletes undergo strict training, dieting and exemplary discipline. They make real sacrifices hunting for medals and the glory of this world. Even so, in time, their glory and accomplishments are forgotten.
The same does not happen to the true glory, which is reserved to the loyal and faithful to the Lord of Eternal Glory.