Sin not only stains our soul, it also clouds our judgment, causing confusion. People are made to think that God is not always fair to us. We forget that there is life after death. You could say that life is unfair if we die and no longer exist, as some have a lot more of everything than others while on earth. Then again, if we all become nothing sooner or later, what's point of talking about being fair or unfair in our brief existence? Because the soul lives on forever, we can be sure that after God judges us, we'll see that everyone will have received fair treatment.