1 Corinthians 9:23-26

I do it all for the sake of the gospel, that I may share with them in its blessings. Do you not know that in a race all the runners run, but only one receives the prize? So run that you may obtain it. Every athlete exercises self-control in all things. They do it to receive a perishable wreath, but we an imperishable. So I do not run aimlessly; I do not box as one beating the air.