When reading this, the first thing I remembered was Corrie ten Boom's testimony when she met a Nazi prison guard who was responsible for her sister's death in the Concentration Camp they were in. You can imagine her emotions and reaction. But he told her that he had been born anew in Christ, Yet, she still could not bring herself to forgive him, nor extinguish the firing hate that was boiling up within her. Yet, as a Christian, she knew she was supposed to forgive him. She still could not... until she asked the Holy Spirit to enable her to forgive him. It was a great weight that lifted off of her, she said.

Her stories and books are online.