I should blush to write of "Science and Health with Key to the Scriptures" as I have, were it of human origin, and were I, apart from God, its author. But, as I was only a scribe echoing the harmonies of heaven in divine metaphysics, I cannot be super-modest in my estimate of the Christian Science textbook.The First Church of Christ, Scientist, and Miscellany, p. 115.—Mary Baker Eddy.
The test posed by Mrs. Eddy is age-old: to determine whether a person who declares "Thus saith the Lord" truly represents the voice of God. Underlying this question—a question that encompasses both the nature of God's revelation and the role of His messenger—is the way in which divinity reaches humanity.
Everything mankind has rightly known of God has first originated with God, the one all-knowing Mind. God reveals Himself, initiating and sustaining His own infinite unfoldment. The divine outcome, or expression, is the Christ, God's idea, which manifests Mind's intelligence. Revelation, transcending efforts of the human mind to think about God—to box and label the infinite—results from conscious recognition and expression of Mind's self-knowledge. Fundamentally, revelation is the creator's own understanding of Himself and His spiritual creation, made evident to humanity.