2 Corinthians 13:3-4

3That will tell you what you want to know about me. You will surely know that I speak with the authority of Christ himself. Christ is not weak when he works in you. He shows his power among you.

4People killed Christ on the cross as a weak person. But he now lives by God's power. We are also weak as we serve Christ, like he was weak. But we live, because he now lives. So, when we come to you, we will show God's power among you.