"Truth, and not corporeal will is the divine power which says to disease, 'Peace, be still.'"What is the truth that heals and how do we bring it to bear on a problem that needs healing? Eddy explains that in it's highest sense, truth is a synonym for God. In her book, she capitalizes the word "Truth" when referring to this divine essence. For example, Eddy describes Jesus's healing prayers as "deep and conscientious protests of Truth, - of man's likeness to God and of man's unity with Truth ..." In other words, Jesus proclaimed the power and goodness of God, God's creation of man in God's likeness, and the indissoluble unity of this relationship between God and man.
I experienced an example of this power of Truth on a backpacking trip. Throughout the trip, I had been able to carry a heavy pack and hike without getting tired or affected by the altitude. However, as I started hiking the last day I felt a pain in my side. The pain grew throughout the hike and I eventually became very weak. It was tempting to speculate about a physical cause, but I refused. I stuck with my inspiration of truth that strength wasn't about muscles, food, or air, but about my connection to God. This wasn't positive thinking or willing myself to be well, but a conviction based on understanding the truth about my being. As I held steadfastly to this truth, the pain disappeared and I resumed my normal activities.
You can learn more about the truth of your spiritual identity in the book Science and Health with Key to the Scriptures. Read this book online or purchase it from Amazon or any major book retailer. It is also available for sale or study at the Christian Science Reading Room in Evergreen, Colorado at 4602 Plettner Lane.