2 Corinthians 11:12-15
12But what I am doing I will continue to do, aso that I may cut off opportunity from those who desire an opportunity to be found just as we are in the matter about which they are boasting. 13For such men are afalse apostles, bdeceitful workers, disguising themselves as apostles of Christ. 14And no wonder, for even aSatan disguises himself as an bangel of light. 15Therefore it is not surprising if his ministers also disguise themselves as ministers of righteousness, awhose end will be according to their deeds.