2 Timothy 2:1

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 Timothy 1:7 NIV
For the Spirit God gave us does not make us timid, but gives us power, love and self-discipline.

Ephesians 6:10 NIV
Finally, be strong in the Lord and in his mighty power.

Philippians 4:13 NIV
I can do all this through him who gives me strength.