Brothers and sisters:
That I, Paul, might not become too elated,
because of the abundance of the revelations,
a thorn in the flesh was given to me, an angel of Satan,
to beat me, to keep me from being too elated. 
Three times I begged the Lord about this, that it might leave me,
but he said to me, “My grace is sufficient for you,
for power is made perfect in weakness.” 
I will rather boast most gladly of my weaknesses,
in order that the power of Christ may dwell with me. 
Therefore, I am content with weaknesses, insults,
hardships, persecutions, and constraints,
for the sake of Christ;
for when I am weak, then I am strong.

2nd Corinthiens