2 Corinthians (2 Co) 12:6-7

If I did want to boast, I would not be foolish; because I would be speaking the truth. But, because of the extraordinary greatness of the revelations, I refrain, so that no one will think more of me than what my words or deeds may warrant. Therefore, to keep me from becoming overly proud, I was given a thorn in my flesh, a messenger from the Adversary to pound away at me, so that I wouldn’t grow conceited.