I confess I have carried bitterness inside me. There has been a time or so when I have been hurt or betrayed by those that I thought loved me.
My humanness wanted to hurt them back. My humanness wanted me to tell others bad things about that person.
But God wants differently.
I may never understand what motivates others to do what they do.
But God expects me to live righteously in all circumstances.
I saw a sign that said, Be kind to your enemies, it confuses them.
I believe that is true. If people are intentionally trying to hurt you, they enjoy watching your reactions to being hurt. You reward them by retaliating. Imagine how it would confuse them if you not only continued to be kind, but go out of your way to be extra nice.
The Bible gives us instruction in this matter.
If your enemy is hungry, give him food to eat; And if he is thirsty, give him water to drink; For you will heap burning coals on his head, And the Lord will reward you. (Proverbs 25:21, 22 NASB)
"B ut if your enemy is hungry, feed him, and if he is thirsty, give him a drink; for in so doing you will heap burning coals on his head." Do not be overcome by evil, but overcome evil with good. (Romans 12:20, 21 NASB)
The reward for your YOUR kind treatment of those that hurt and offend you is in knowing that you are pleasing God and bringing Him glory and He will take care of you in all matters.
Bless those who persecute you; bless and do not curse. Never take your own revenge, beloved, but leave room for the wrath of God, for it is written, "V engeance is M ine, I will repay," says the Lord. (Romans 12:14, 19 NASB)