2 Corinthians 2:5-11

Now, if anyone has made somebody sad, he has not done it to me but to all of you—in part, at least. (I say this because I do not want to be too hard on him.) It is enough that this person has been punished in this way by most of you. Now, however, you should forgive him and encourage him, in order to keep him from becoming so sad as to give up completely. And so I beg you to let him know that you really do love him. I wrote you that letter because I wanted to find out how well you had stood the test and whether you are always ready to obey my instructions. When you forgive people for what they have done, I forgive them too. For when I forgive—if, indeed, I need to forgive anything—I do it in Christ's presence because of you, in order to keep Satan from getting the upper hand over us; for we know what his plans are.