'Infirmities' in the Bible

Of such an one I will boast, and of myself I will not boast, except in my infirmities,

and He said to me, 'Sufficient for thee is My grace, for My power in infirmity is perfected;' most gladly, therefore, will I rather boast in my infirmities, that the power of the Christ may rest on me:

wherefore I am well pleased in infirmities, in damages, in necessities, in persecutions, in distresses -- for Christ; for whenever I am infirm, then I am powerful;