However, my understanding is that one of the main goals of religion is peace, both personal and societal. The way that religion works towards this is simple.
Religion is the acceptance of a power superior to us, to believe in something that is more powerful that controls most of the events that occur around us.
When one has something that is greater than oneself, there is the ability to leave things in the hands of that so called mightier being. It is like saying that something is out of my control and therefore, is the prerogative of that being. Let us call that being God.
When I do not understand something, like why a particular religion is so fanatic, why someone killed my brother in the twin tower, why someone raped my sister because she was a Christian, why my father was murdered because he was a Hindu, I have two option.
1) I can either take offence and go on a killing spree. You killed my blood, I shall now spill yours. Simply said, the cliche "An eye for an eye makes the world go blind".
2) The second option is when I say that it is a part of the games played by the God and is not for me to understand or avenge.
The first option is not going to lead anywhere, I will never forget that I was wronged, and the person I wronged will not either. Neither will I have personal peace, nor will I have societal peace.
The second option on the other hand, will give me grief for a period of time. But when I have left it to the supreme power, then I do not have to understand. I am letting time heal me. Over a period of time, my memories will be of the person, rather than the means of death.
I do agree that it is quasi-peace, but I am of the opinion that it shall work in all frames of reference. I took the easiest to illustrate.
The point I am making is that by transferring the blame to something that cannot be avenged for the mistake (imagine if you can, I go to God and try to have an argument with him). In the process, my conscience is clean, and that leads to peace.
Highly convoluted agreed, slower sure, but surer.