Christ
To whom ye forgive any thing, I forgive also: for if I forgave any thing, to whom I forgave it, for your sakes forgave I it in the person of Christ; 2 Corinthians 2:10
Paul forgives the repentant man as Christ's representative, as if in Christ's presence. Forgiving others follows the Savior's own forgiveness.
How we know: the verse itself names Him · the chapter heading names Him
