"...you have heard it said..."
It's something to me that the written code has a way of revealing the contents of a person. The bible has something for everyone. If you are inclined to commit genocide, it's in there. If you are inclined to give up your life for an enemy, it's in there too. When you read the stories of Jesus response to the 'religious' of his time, the message was, "you don't get it."
If we respond to what people have done to us, are we followers of God or are we followers of people? The real trick is to discern God. If we can, perhaps we to will be able to say, forgive them, for they know not what they do
You are the world Krishnamurti