Religion deals with Human Beings. Human beings are a good-evil combo. When it comes to killing and violence, History has recorded much of it in the absence of religion. Before Islam Arabs will killing each other , they used to bet on a pregnant woman whether she has baby boy or baby girl.. to win their bet they wont even mind killing the women and take the baby out to judge.

History of Pharaoh and Israel slavery, killing of male kids are very popular. Hence religion has helped human beings to improve their social status in terms of lifestyle moral values, peace, justice, love, kindness, forgiveness and in many aspects.