That God can heal the sick is an established fact. But the question is often asked how He does it, since the Bible declares that He is "of purer eyes than to behold evil."Hab. 1:13 How can He heal something of which He is not conscious?
In explaining this point in divine metaphysics, Christian Science begins by defining all forms of sickness as illusions, without divine causation or support, and therefore unknown in the realm of spiritual reality. What appears to be sickness is a mortally mental phenomenon that seems real only to human consciousness. It is evolved from dark, unhappy, or sinful beliefs—false suggestions of fear, hate, lust, discontent.
Christian Science reasons that a perfect God, who is Spirit, can never be conscious of the discordant mental states of mortals. The absolute fact is that divine Mind knows nothing but its own infinite self-containment; God perceives and experiences only Himself and His universe of perfect ideas dwelling eternally within Himself. Mrs. Eddy tells us, "God's law reaches and destroys evil by virtue of the allness of God."No and Yes, p. 30