2 Corinthians 12 7And lest I should be exalted above measure by the abundance of the revelations, a thorn in the flesh was given to me, a messenger of Satan to buffet me, lest I be exalted above measure. 8Concerning this thing I pleaded with the Lord three times that it might depart from me. 9And He said to me, “My grace is sufficient for you, for My strength is made perfect in weakness.” Therefore most gladly I will rather boast in my infirmities, that the power of Christ may rest upon me. 10Therefore I take pleasure in infirmities, in reproaches, in needs, in persecutions, in distresses, for Christ's sake. For when I am weak, then I am strong. I've heard Christians say all kinds of things about Paul's thorn, like he had an eye problem, or another illness, or even sinful lusts. Many say that God gave him this affliction to test him or to keep him humble. What is your understanding?