Forgiveness is good for a community

2 Corinthians 2:7-8, 10

So that on the contrary you should rather forgive him and comfort him, lest by any means such a one should be swallowed up with his excessive sorrow. Therefore I beg you to confirm your love toward him. Now I also forgive whomever you forgive anything. For if indeed I have forgiven anything, I have forgiven that one for your sakes in the presence of Christ.