2 Corinthians 11:13-17

For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.

And no marvel; for Satan himself is transformed into an angel of light.

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.

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.

That which I speak, I speak it not after the Lord, but as it were foolishly, in this confidence of boasting.