2 Corinthians 11:13-18

13For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ. 14And no wonder, for even Satan disguises himself as an angel of light. 15So it is no surprise if his servants, also, disguise themselves as servants of righteousness. Their end will correspond to their deeds. 16I 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. 17What I am saying with this boastful confidence, I say not as the Lord would but as a fool. 18Since many boast according to the flesh, I too will boast.