I wrote sternly so that you might know my love. In my thought I also intended to show this love to the one who sinned, if he repented.
Behold, he repents. Let us show love to him.
Chrysostom says: "The Apostle begins to speak about this to the Corinthians only after first praising them because they have one and the same joys and sorrows with him.
He said beforehand: 'that my joy is the joy of you all.' If my joy is also your joy, then, he says, you must now rejoice together with me, just as then you grieved together with me.
For as by your former sorrow you gave me consolation and joy, so you will do the same now by your joy, if only you share in my joy."
All sins committed before baptism are washed away by baptism and forgiven freely. Sins after baptism require a purifying punishment.
This was required also for the Corinthian sinner. The Apostle says: As to the purifying punishment that must be imposed on the penitent, this censure already carried out is enough for our penitent.
It is the censure "by many," that is, the excommunication pronounced by the assembly of believers. "For all began to turn away from him, as the Apostle commanded" (Theodoret).
Censure, epitimia, embraces everything imposed on the one who sinned, despite his repentance.
Here is the beginning and foundation of our ecclesiastical penances and of the very manner of their use.
They are pronounced in all strictness, and then shortened according to the feelings of contrition in the penitent person.
It is noteworthy that here, as in the first epistle, the Apostle mentions neither the name of the sinner nor the name of his sin.
Chrysostom says of this: "He does not say, 'to the one who fell into fornication,' but again, as in the first epistle, 'to such a one,' though for another reason.
Then he spoke thus out of loathing for the sin committed. Here he speaks so out of condescension toward the sinner.
For this reason he does not mention here the sin committed, since it was already time to defend the guilty man."