For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God—not by works, so that no one can boast. Ephesian 2:8-9

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. 2 Corinthians 12:9