'Power of Christ' in the Bible

And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.

Most gladly, therefore, will I glory in my infirmities, that the power of Christ may rest upon me. Wherefore I am well pleased with infirmities, with injuries, with necessities, with persecutions, with distresses for Christ; for when I am weak, then am I strong.