In Christian Science we learn that our health, or wholeness, comes from God. It is eternal because Life is eternal. As we learn more of this Life which is God, we also learn more of our own health. Christ Jesus' full understanding of divine Life empowered him to instantaneously heal sickness and disease. And a fundamental aspect of his Christly authority was his knowledge of preexistence.
Mrs. Eddy writes, "The meek Nazarene's steadfast and true knowledge of preexistence, of the nature and the inseparability of God and man,—made him mighty." Miscellaneous Writings, p. 189; A spiritual understanding of preexistence is a healing balm. It brings solace and health to us as it replaces our belief in mortal limitations.
"And God said, Let us make man in our image, after our likeness," Gen. 1:26; we read in Genesis. If God is eternal Life—and He is —then man as His image and likeness lives eternally; and our imperishable health is at one with unlimited Life. In truth we exist untouched by the boxed-in theories of material time and space.