ALL through Mrs. Eddy's writings emphasis is laid upon the need of knowing what is real and detecting what is unreal. This knowledge and this differentiation are essential to the successful handling of error and to corrective work in Christian Science. A great deal of healing was done by the disciples, and much is being done today, through the clear knowing of the presence and power of God; through knowing that God is All-in-all, that "there is none else beside him"—in a word, through an absolute faith in God's supremacy.
In Christian Science this knowing that God is All, and therefore supreme, leads to the recognition of the truth of the prophet's words, "I am the Lord, and there is none else;" in other words, it brings the conviction that there is nothing apart from the infinite divine Mind and its infinite expression.
While such absolute faith and such knowing have done wonders and will do so always, yet, because of the seeming mesmerism of worldliness and of opposition to the establishment and operation of spiritual truth, Mrs. Eddy found it necessary to insist upon the specific recognition of error as error. She counseled not only the affirmation of Truth, but also the denial of error, as seen in "the scientific statement of being" (Science and Health with Key to the Scriptures, p. 468). Healing in Christian Science is effectual in proportion as the reality of Truth and the unreality of what is wrongly believed to be real is recognized, and the error cast out by denial.