AUV(i)
 1  Although I must boast about myself  [See 11:21-27],  it  [really]  is not profitable.  So,  I will go on to  [tell about]  visions and  [inspired]  revelations given  [to me]  from the Lord. 
 2  I know a man in  [fellowship with]  Christ who,  fourteen years ago,  was taken  [literally,  “snatched”]  up to the third heaven.  [Note:  The first heaven would be where birds fly;  the second where the stars are;  and the third where God is].  (I do not know whether he was in his physical body or whether it was an “out-of-the-body” experience,  but God knows).  [Note:  Paul is obviously telling about a personal experience.  See verse 7]. 
 3  I know that this man --- whether in his body or out of it,  I do not know,  but God does --- 
 4  was  [actually]  taken up into Paradise.  [Note:  This is the same as the “third heaven” of the previous verse,  and was a place in the presence of God.  See Luke 23:43;  Rev.  2:7].  There he heard inexpressible words which are not permitted for people to repeat. 
 5  I will boast on behalf of this person,  but I will not boast about myself  [anymore],  except about my weaknesses. 
 6  However,  if I wanted to boast,  I would not be a fool,  because I would be telling the truth.  But I will hold back,  so that no one will think more of me than what he sees or hears from me. 
 7  But,  so that I would not become too conceited over the tremendous revelations  [I received],  a “thorn in the flesh” was given to me as a messenger from Satan to torment me.  [Note:  This “thorn” was probably some physical handicap,  possibly defective eyesight.  See Gal.  4:14-15;  6:11]. 
 8  I pled with the Lord about this matter three times,  that He would remove this problem from me. 
 9  But God said to me,  “My unearned favor is enough for you,  for my power is made complete in  [your]  weakness.” Therefore,  I will most gladly boast,  so that the power of Christ can rest on me.