II Cor 12:7-10
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. For this thing I besought the Lord thrice, that it might depart from me. 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.
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.
Why are so many “Theologians” confused about what the “thorn in the flesh” is that Paul references?
The answer is right there in verse 10, it is things suffered for the sake of Christ.