Revenge is irreverent in the eyes of God; by retaliating we are telling God that He can not provide the punishment that deserves the one who has harmed us;

Very true, when we revenge on something someone did to us, then it means we don't want God to take decision on that specific matter.
As good children of God, we should always seek God first before we do anything we want to do.
For with him by our side, we will always make the best decision in life.