As a C.S. Lewis fan, I have struggled myself to articulate my belief that without JudeoChristianity, there is no sense of just or unjust but simply whatever the powers that be want to be the law will be the law arbitrarily enforced as the power that be choose to enforce them. God does make a difference.CS Lewis on his conversion to Christianity. He says in Mere Christianity:
But how had I got this idea of just and unjust? A man does not call a line crooked unless he has some idea
of a straight line. What was I comparing this universe with when I called it unjust? If the whole show was
bad and senseless from A to Z, so to speak, why did I, who was supposed to be part of the show, find myself
in such violent reaction against it? A man feels wet when he falls into water, because man is not a water
animal: a fish would not feel wet. Of course I could have given up my idea of justice by saying it was
nothing but a private idea of my own. But if I did that, then my argument against God collapsed too—
for the argument depended on saying that the world was really unjust, not simply that it did not happen
to please my private fancies. Thus in the very act of trying to prove that God did not exist—in other words,
that the whole of reality was senseless—I found I was forced to assume that one part of reality—namely my
idea of justice—was full of sense.
I cannot think of one single nation in which Atheism is the only acceptable 'religion' that is not totalitarian and hostile to, even often lethal to any who oppose those in power or the policies they require the people to accept. Just or unjust. In the eye of the beholder.