How hard it must have been to get an army out of a city after it had entered through the gate! A few faithful watchmen, right there at the entering in, could do more to defend the city by keeping the adversary out, than an army after it had entered. Likewise, a few scientific statements of truth as to the nonexistence of error and disease, since good alone is the manifestation of God, Life, if used with alertness, will protect consciousness from evil's entrance. Seeing disease as illusion, and maintaining this in thought against the arguments of personal sense, will prove more effectual than many assertions of truth while believing the condition to be real or a part of man's being. In no other way can false belief be wholly cast out.
That erroneous mortal claims are no part of true consciousness, are never God's ideas, must be clearly seen in order that the gate may be shut against the enemy. To expect to heal by using the arguments of truth, while still retaining the false sense of the reality of disease, is like trying to drive out an invading army which has entered through the open gates of the city. If we would "turn the battle to the gate," we must see the error as never having entered true being or consciousness; we must meet it on the basis of its unreality, and know that because man is expressing perfect Mind perfectly, that is all which is true about him.
In the brief experience mentioned above there was also seen the impossibility of changing a true state of consciousness, despite the evidence of the senses; for true, scientific thinking is in no way contingent upon bodily conditions. Correct thought processes are of divine Mind, and are governed by Mind; and through them operates God's law of harmony. We shall see this made manifest in health, harmony, and prosperity as our sense of Life is enlarged and enriched, not because of a change in matter. Christian Science demonstrates that the more one brings his thinking into obedience to God's law, the more that law governs his living, frees his thought from sin, drives out superstitious fear, and releases his body from the claims of disease.
The Psalmist sang, "Beautiful for situation, the joy of the whole earth, is mount Zion, . . . the city of the great King." In the chapter called "The Apocalypse" in "Science and Health with Key to the Scriptures," Mrs. Eddy reveals the true metaphysical meaning of this city and its gates, and throughout her writings has given definite rules for the possession of this spiritual habitation, whose Builder is God, divine Mind. On page 577 she says: "Its gates open towards light and glory both within and without, for all is good, and nothing can enter that city, which 'defileth, . . . or maketh a lie.'"