2 Corinthians 13:1-3

1This will be my third visit to you. “Every matter must be established by the testimony of two or three witnesses.”

2I already gave you a warning when I was with you the second time. I now repeat it while absent: On my return I will not spare those who sinned earlier or any of the others,

3since you are demanding proof that Christ is speaking through me. He is not weak in dealing with you, but is powerful among you.