When we declare someone to be a saint, it is because we see that they lived a holy life. Because the real question Newman is asking is: Would we even enjoy heaven if we got there and weren’t holy? He gives these commands because he wants us to enjoy heaven, to be “children of the Most High” (6:35). And if we are to enjoy it, we must know who God is and love him enough that an eternity of worshipping him sounds like, well, heaven. You wouldn’t expect to win a marathon without training; we cannot expect to enjoy heaven unless we try each day to stop judging and condemning others and instead focus on the forgiveness God offers us when we fall short.