2 Corinthians 12:5
Of such an one will I glory: yet of myself I will not glory, but in mine infirmities.
Note 7 at 2Co 12:5: Paul had been pressured into boasting (see note 2 at 2Co 11:1), but his boasting was noticeably different from the boasting of his accusers. He gloried in the things he had suffered, not in the great things he had done for the Lord. Paul knew that Jesus deserved all the credit for any good thing that came through him, so he wouldn't boast of his accomplishments. His only boast was in the suffering he had endured for the cause of Christ (Php 3:7-10).
Note 8 at 2Co 12:5: The phrase "mine infirmities" is referring to 2Co 11:30, which says, "I will glory of the things which concern mine infirmities." Paul listed a number of persecutions and afflictions that he had suffered during his ministry, and he specifically identified them as his infirmities. It is important to note that sickness and disease were not included among them (see note 17 at 2Co 11:27).