2 Corinthians 12:9

12:9 But he said to me, “My grace is enough for you, for my power is made perfect in weakness.” So then, I will boast most gladly about my weaknesses, so that the power of Christ may reside in me.

2 Corinthians 12:19

12:19 Have you been thinking all this time that we have been defending ourselves to you? We are speaking in Christ before God, and everything we do, dear friends, is to build you up.