THERE'S AN ANALOGY that has helped me understand that we, as God's image, are as sinless, diseaseless, and indestructible as God. Therefore we are always under the protection of God's law of harmony.
Imagine that you have a slide projector, and in the projector is a slide of an oak tree. The projector doesn't project the slide itself onto the screen, as a cannon would shoot out a cannonball; it projects the image. The slide is the substance of the image and remains in the projector.
Something would have to hurt God in order to hurt us. But nothing can.