2 Corinthians 11:13-21

For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ. And no wonder, for even Satan disguises himself as an angel of light. So it is no surprise if his servants, also, disguise themselves as servants of righteousness. Their end will correspond to their deeds. I repeat, let no one think me foolish. But even if you do, accept me as a fool, so that I too may boast a little. What I am saying with this boastful confidence, I say not as the Lord would but as a fool. Since many boast according to the flesh, I too will boast. For you gladly bear with fools, being wise yourselves! For you bear it if someone makes slaves of you, or devours you, or takes advantage of you, or puts on airs, or strikes you in the face. To my shame, I must say, we were too weak for that! But whatever anyone else dares to boast of—I am speaking as a fool—I also dare to boast of that.