Forgiveness - One thing evil cannot stand

In the book, The Simple Faith of Mr. Rogers, Amy Hollingsworth relates a story Mr. Rogers told her about one of his professors, Dr. William Orr. 

Fred Rogers had gone to see Dr. Orr, toward the end of his life after a stroke left him partially paralyzed, but his professor was still bright in mind and spirit. Mr. Rogers asked Dr. Orr about something that was on his mind from the Sunday morning worship service he and his wife had attended earlier that day. One of the hymns had been Martin Luther’s A Mighty Fortress Is Our God. What puzzled Mr. Rogers was the verse that says:

         
The prince of darkness grim, we tremble not for him;

his rage we can endure, for lo! his doom is sure, 
one little word shall fell him.  

 “Dr. Orr,” Fred Rogers asked, “what is the one little word that will fell the prince of darkness?" After a quiet moment, the professor answered “Forgiveness.  You know, Fred, there is one thing that evil cannot stand, and that's forgiveness.”

Forgive. It is one little word, but it turns out to be the gift to you, not so much a gift to the person you are forgiving. Forgiveness reaches to both people.  In forgiveness, there is the absence of all evil. Because there is one thing evil cannot stand, and that's forgiveness.