2 Corinthians 9:8; 2 Corinthians 10:4; 2 Corinthians 13:9

8 And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work:
4 (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)
9 For we are glad , when we are weak , and ye are strong: and this also we wish , even your perfection.