When someone sins against us, we are to go to him and tell him about it. If he repents, we are to forgive him. Luke 17:3,4 says that if he sins against us many times a day and repents afterwards, we are to forgive him for every time.
Luke 17:3,4 ... Take heed to yourselves: if your brother trespasses against you rebuke him. And if he repents, forgive him. if he trespasses against you seven times in a day, and seven times in a day turn again to you, saying "I repent", you shall forgive him.
Jesus forgave the men who crucified Him ... He prayed the ultimate prayer for forgiveness here. He wasn't thinking about His own pain at this time ... He was thinking about them. He asked the Father to forgive them because they did not know what they were doing.
Luke 23:34a ... Then said Jesus, "Father, forgive them; for they know not what they do."
Thus, we are to think of the person doing the sinning against us instead of our own hurt, and in this way, ask the Father to forgive that person along with forgiving him ourselves.
When we forgive the ones who sin against us, our Heavenly Father calls us "kind and tenderhearted".
Ephesians 4:32 ... Be kind to one another, tenderhearted, forgiving one another, even as God for Christ's sake has forgiven you.
Colossians 3:13 ... Forebear one another and forgive one another, if anyone has a quarrel against any ... even as Christ forgave you, so you do also.
We are to be gentle and forebear one another. If we have a complaint or difference with another person, we must forgive and pardon him.
Jesus has freely forgiven us. It's a must for us to forgive so that the Lord can forgive us.
Reverend Robert W. & Mary C. Butler