2 Corinthians 12:9-10 NIV
 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 weaknesses, in insults, in hardships,   in persecutions,   in difficulties. For when I am weak, then I am strong.  
2 Corinthians 3:4-5 NIV
 Such confidence   we have through Christ before God. Not that we are competent in ourselves   to claim anything for ourselves, but our competence comes from God.  
Colossians 1:11 NIV
 being strengthened with all power   according to his glorious might so that you may have great endurance and patience,  
Ephesians 3:16 NIV
 I pray that out of his glorious riches   he may strengthen you with power   through his Spirit in your inner being,  
Ephesians 6:10 NIV
 Finally, be strong in the Lord   and in his mighty power.  
Isaiah 40:29-31 NIV
 He gives strength   to the weary   and increases the power of the weak.  Even youths grow tired and weary, and young men   stumble and fall;    but those who hope   in the Lord will renew their strength.   They will soar on wings like eagles;   they will run and not grow weary, they will walk and not be faint.  
Isaiah 41:10 NIV
 So do not fear,   for I am with you;   do not be dismayed, for I am your God. I will strengthen   you and help   you; I will uphold you   with my righteous right hand.   
Isaiah 45:24 NIV
 They will say of me, ‘In the Lord alone are deliverance   and strength.  ’” All who have raged against him will come to him and be put to shame.   
John 15:4-5 NIV
 Remain in me, as I also remain in you.   No branch can bear fruit by itself; it must remain in the vine. Neither can you bear fruit unless you remain in me. “I am the vine; you are the branches. If you remain in me and I in you, you will bear much fruit;   apart from me you can do nothing.
John 15:7 NIV
 If you remain in me   and my words remain in you, ask whatever you wish, and it will be done for you.