Do not be angry or mad when somebody had done something bad or something wrong to you,do not be offended.
This are the things that seems almost impossible for us because you see human nature and instinct dictate that if somebody does something wrong to you the only thing that you are going to do for others is to get angry and to react as physicists say,for every action there is always an equal or opposite reaction for example if somebody whom you love kiss you,you will do a reaction also. There are action which are opposite reactions.
Why do we emphasize on this opposite reaction if somebody spank you on the face maybe your reaction is to also spank him harder.
Has a Christian if somebody has done wrong to you the reaction of a Christian is not anger. We have to be happy if somebody has done us wrong. Why if somebody sin again you,it is an opportunity being given to you by God to forgive because the next thing you have to think about it when you experience something wrong being done to,the next thing that a Christian should think about is to forgive why?
In the book of Matthew 6 verse 14
For if ye forgive men their trespasses,your heavenly father will also forgive you.
So,if somebody has sin again you it's good because you have the opportunity not to forgive and because you are going to forgive,the father now finds the opportunity also to forgive you of your sins.
So,it is for your benefit if you forgive because when you forgive you giving the father the opportunity to forgive you.
If you don't forgive,you are taking the possibility for the father to forgive you why? verse 15 says;
But if ye forgive not men their trespasses,neither will your father forgive your trespasses. If you don't forgive the father will not forgive you too.
If you given the chance to forgive.
He wants us to learn how to forgive so that he may forgive us also. The father exercise justice always. The bible tells us this things.
Matthew 5 verse 7 says; Blessed are the merciful, for the shall obtain mercy.
If we show mercy,God will show us also mercy.
How do you forgive somebody who has done evil thing against you? It is simply understanding why the father allowed that person do something evil to you,the father allowed that because he want you to learn how to forgive so that you may be also forgiven by him. We are all committing sins. Even the Holy of men who live on earth have committed sins.