When you experience evil, betrayal, and other forms of offences you can easily be overcome by evil. When something overcomes you, it ruins you and overpowers you and it influences you totally. I believe is a weapon of mass destruction. It destroys a lot of things. God's weapons always look weak in the eyes of men. Don't forget his ways are not our ways.
Instead of yielding to how you feel, bless and curse not. Never take you own revenge. It is God who fights for you even in your love walk ; when you fight for yourself God has to step aside so that you would do it and it always ends in distraction. He is showing us who it belongs to that is why he says ‘Vengeance is mine'. He knows very well that we often want own it.