2 Corinthians 13:1-3; 2 Corinthians 13:10
This is the third time I am coming to you. Every charge must be established by the evidence of two or three witnesses.
I warned those who sinned before and all the others, and I warn them now while absent, as I did when present on my second visit, that if I come again I will not spare them--
since you seek proof that Christ is speaking in me. He is not weak in dealing with you, but is powerful among you.
For this reason I write these things while I am away from you, that when I come I may not have to be severe in my use of the authority that the Lord has given me for building up and not for tearing down.