2 Corinthians 12:1-10 
(1) It is not expedient for me doubtless to glory. I will come to visions and revelations of the Lord.  
(2)  I knew a man in Christ above fourteen years ago, (whether in the body, I cannot tell; or whether out of the body, I cannot tell: God knoweth;) such an one caught up to the third heaven.  
(3)  And I knew such a man, (whether in the body, or out of the body, I cannot tell: God knoweth;)  
(4)  How that he was caught up into paradise, and heard unspeakable words, which it is not lawful for a man to utter.  
(5)  Of such an one will I glory: yet of myself I will not glory, but in mine infirmities.  
(6)  For though I would desire to glory, I shall not be a fool; for I will say the truth: but now I forbear, lest any man should think of me above that which he seeth me to be, or that he heareth of me.
(7)  And lest I should be exalted above measure through the abundance of the revelations, there was given to me a thorn in the flesh, the messenger of Satan to buffet me, lest I should be exalted above measure.  
(8)  For this thing I besought the Lord thrice, that it might depart from me.  
(9)  And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
(10)  Therefore I take pleasure in infirmities, in reproaches, in necessities, in persecutions, in distresses for Christ's sake: for when I am weak, then am I strong.

2 Corinthians 12:13-15  (13) For what is it wherein ye were inferior to other churches, except it be that I myself was not burdensome to you? forgive me this wrong.  (14)  Behold, the third time I am ready to come to you; and I will not be burdensome to you: for I seek not yours, but you: for the children ought not to lay up for the parents, but the parents for the children.  (15)  And I will very gladly spend and be spent for you; though the more abundantly I love you, the less I be loved.