God tells us in previous and future verses that illness should not exist in this world. In this verse, God is telling us that there are many kinds of illnesses in the world. We know this is true, but why does God tell us there should be no illness? In the perfect world that God created, there should be no illness. God placed the Original mind of God in each of the first parents that began the world. This mind is meant to bring upon only joy, without any illness. But unfortunately, human beings have accumulated dust in their minds. These dusts are regret, covetousness, self-love, greed, and arrogance. God tells us that these dust cause illness on our bodies.