It’s powerless (Saint Nectarios of Pentapolis)

Sin is a great evil, because it produces unhealthy thoughts, befouls the soul, dissipates it, corrupts it and, in the end, impels it towards death. Just as illnesses weaken the body and kill it, this is what sins do to the soul. An ailing soul, burdened by passion, always gives in to it. It’s unable to rise again and turn to heaven and is too weak to face the light of truth.