2 Corinthians 13:1-3; 2 Corinthians 13:10
This is the third time I am coming to you. In the mouth of two or three witnesses shall every word be established .
I told you before , and foretell you , as if I were present , the second time; and being absent now I write to them which heretofore have sinned , and to all other, that, if I come again , I will not spare :
Since ye seek a proof of Christ speaking in me, which to you-ward is not weak , but is mighty in you.
Therefore I write these things being absent , lest being present I should use sharpness, according to the power which the Lord hath given me to edification, and not to destruction.