2 Corinthians 11

12 But I will keep on doing what I am doing, in order to undercut those who want an opportunity to be regarded as our equals in the things of which they boast. 13 For such men are false apostles, deceitful workers, masquerading as apostles of Christ. 14 And no wonder, for Satan himself masquerades as an angel of light. 15 It is not surprising, then, if his servants masquerade as servants of righteousness. Their end will correspond to their actions.