2 Corinthians 12:3-7

And I know how such a man—whether in the body or apart from the body I do not know, God knows—

was caught up into Paradise and heard inexpressible words, which a man is not permitted to speak.

In behalf of such a man I will boast; but in my own behalf I will not boast, except regarding my weaknesses.

For if I do wish to boast I will not be foolish, for I will be speaking the truth; but I refrain from this, so that no one will credit me with more than he sees in me or hears from me. A Thorn in the Flesh

Because of the extraordinary greatness of the revelations, for this reason, to keep me from exalting myself, there was given to me a thorn in the flesh, a messenger of Satan to torment me—to keep me from exalting myself!