II Corinthians 11:4-5, 16-18

For if he who comes preaches another Jesus whom we have not preached, or if you receive a different spirit which you have not received, or a different gospel which you have not accepted—you may well put up with it! For I consider that I am not at all inferior to the most eminent apostles.

I say again, let no one think me a fool. If otherwise, at least receive me as a fool, that I also may boast a little. What I speak, I speak not according to the Lord, but as it were, foolishly, in this confidence of boasting. Seeing that many boast according to the flesh, I also will boast.