2 Corinthians 11:12-18

12 But what I do, that I will do, that I may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we.
13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14 And no marvel; for Satan himself is transformed into an angel of light.
15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.
16 I say again, Let no man think me a fool; if otherwise, yet as a fool receive me, that I may boast myself a little.
17 That which I speak, I speak it not after the Lord, but as it were foolishly, in this confidence of boasting.
18 Seeing that many glory after the flesh, I will glory also.