'Weaknesses' in the Bible

On behalf of such a one will I glory: but on mine own behalf I will not glory, save in my weaknesses.

And he hath said unto me, My grace is sufficient for thee: for my power is made perfect in weakness. Most gladly therefore will I rather glory in my weaknesses, that the power of Christ may rest upon me.

Wherefore I take pleasure in weaknesses, in injuries, in necessities, in persecutions, in distresses, for Christ's sake: for when I am weak, then am I strong.