But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness. Therefore I will boast all the more gladly about my weaknesses, so that Christ's power may rest on me. That is why, for Christ's sake, I delight in weakness, in insults, in hardships, in persecution, in difficulties. For when I an weak, then I am strong.

2 Corinthians 12:9-10