Reward and punishment is not a matter of HASHEM giving a potch to a rasha and making nice to a tzaddik. Each persons cheshbon is meted out with fine precision, sometimes over generations. Its so complex we cannot begin to fathom it. But theres one thing we can understand: our actions, whether for the good or the bad, have a forceful impact.
By giving us a glimpse into the vast orchestrations of reward and punishment, this Shmuz will leave you awed not only by HASHEMs power, but by the power He gives each one of us.