2 Corinthians 7:12
Wherefore, though I wrote unto you, I did it not for his cause that had done the wrong, nor for his cause that suffered wrong, but that our care for you in the sight of God might appear unto you. Wherefore, though I wrote unto you, I did it not for his cause that had done the wrong, nor for his cause that suffered wrong, but that our care for you in the sight of God might appear unto you.
Paul's writing was not for the sake of the one who had done the wrong nor for the sake of the one who had suffered the wrong, but so that his godly care for the believers might appear to them in the sight of God. Correction is an act of friendship, showing confidence and sympathy toward those struggling to overcome, and it costs pain to give pain. Reproof must therefore be given with anxious explanation of its reason.
When one at fault becomes conscious of his error, his self-respect must not be destroyed by indifference or distrust. Confidence must not be withheld until he proves that he will hold out, because such distrust causes the tempted one to stumble. The purpose is sorrow unto repentance that produces earnest care, clearing of self, indignation against sin, fear, longing, zeal, and avenging of wrong, so that the erring approve themselves pure and the one who reproves is comforted and of good courage concerning them.