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 fortell you as if I were present the second time and, being absent, now I write to those who heretofore have sinned, and to all others, that, if I come again, I will not spare --
since ye seek a proof of Christ speaking in me, which toward you is not weak, but is mighty in you.
Therefore I write these things being absent, lest, were I present, I should use sharpness, according to the power which the Lord hath given me for edification, and not for destruction.