‘When a deep injury is done to us we never recover until we forgive”

This statement is saying that you should forgive those who may have caused harm. The harm that they do to you may be irreversible. When you are hit by even the irreversible, you will  not give forgiveness. You will use hate and would want justice. Though hatred and revenge that lurks on us is causing bad to us. We won’t live in happiness. That is why you should simply forgive those who did it. Forgiveness works as you won’t be able to think about the bad done. From that point on it is a new start. Not only that but the one that caused that sadness will also feel gladness not guilt. Also the terror of the mistake won’t haunt him or her. An example would be someone who committed manslaughter. The victim's parents are deeply sad and they have a soul full of anger. Although the guy didn’t mean to do harm, he is in jail. The parents want more than justice, as they want revenge, Sadly, they won't live in peace and move on. In order to do that you need forgiveness, where the soul will be released from the evil.