Are you talking about divine justice? I thought this was about earthy justice, which of course is not ideal or perfec, and it varies depending of the society where it is applied and the moment in time.

I find the term very difficult to define. Let say that I understand justice (or rather law) as a code of conduct that shapes and regulates a society. This code of conduct is versatile and it adapts (or rather it should adapt) to the changes of the society. Sometimes, justice differs from what one may consider morally correct, like with cases of euthanasia or abortion...And sadly, quite often, justice is corrupted and applies differently to individuals. So, there is no perfect justice in earth, yet it is a necesary tool for a society to function.

Hope the above makes sense...