2 Corinthians 2:9-11

You see, I wrote previously in order to see if your hearts would pass the test and if you were willing to follow my counsel in everything. If you freely forgive anyone for anything, then I also forgive him. And if I have forgiven anything, I did so for you before the face of Christ, so that we would not be exploited by the adversary, Satan, for we know his clever schemes.