2 Corinthians 13:1-3; 2 Corinthians 13:10
This will be my third visit to you. "Every matter must be established by the testimony of two or three witnesses."
I 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,
since you are demanding proof that Christ is speaking through me. He is not weak in dealing with you, but is powerful among you.
This is why I write these things when I am absent, that when I come I may not have to be harsh in my use of authority--the authority the Lord gave me for building you up, not for tearing you down.