Not wishing to compare the merits or otherwise of various religions, but just being a pedant…
”An eye for an eye “ is often taken out of context. It’s not a Christian but a Jewish concept which actually urges moderation in justice. What it meant was - only take an eye for an eye (metaphorically), not a life, or several lives, for the loss of an eye.
It’s like Maggie Thatcher’s oft-misinterpreted “There’s no such thing as society”. If you read on in that interview, she explains that there’s no abstract thing called society - it’s made up of all we individuals and depends on our attitudes and efforts. But it suits people not to acknowledge that.