As my third follow-up to your idea that forgiveness is a moral virtue, how do I go about seeing the personhood in the one who injured me?
You can begin to see this person’s struggles in life. Perhaps he was hurt by others when he was a child or an adolescent. Perhaps he currently is having difficulty at work and in his pain, he displaced his anger onto you. We call these kinds of views the personal perspective. As another view on this other person, we have what we call the global perspective in which you see your common humanity with this person. You both are unique in this world. You both need adequate nutrition and rest. You hold humanity in common. A third view, if you have a transcendent perspective, you could see that this person is loved by God. All three views (the personal, global, and cosmic perspectives) help you to see the person as more than the offenses against you.
