1 Corinthians 4:7

4:7 For who concedes you any superiority? What do you have that you did not receive? And if you received it, why do you boast as though you did not?

1 Corinthians 9:16

9:16 For if I preach the gospel, I have no reason for boasting, because I am compelled to do this. Woe to me if I do not preach the gospel!