In the tenth chapter of Revelation we read of a "mighty angel" having "in his hand a little book open: and he set his right foot upon the sea, and his left foot on the earth." The interpretation of this verse found on page 559 of "Science and Health with Key to the Scriptures" gives the clue to the final extermination of evil. There Mrs. Eddy writes: "Did this same book contain the revelation of divine Science, the 'right foot' or dominant power of which was upon the sea, — upon elementary, latent error, the source of all error's visible forms? The angel's left foot was upon the earth; that is, a secondary power was exercised upon visible error and audible sin." It is easy to see that, should the revelation of divine Science be utilized merely curatively, by means of the angel's left foot, or secondary power, fresh errors would indefinitely continue coming to the surface for destruction.
Grateful, then, but not content with healing individual cases and solving individual problems, students of Christian Science are called upon to realize Truth's power and presence quenching the latent fires of evil which claim to smolder in the unconscious thought of mankind, thereafter to break out in manifold discords. Only as the angel's right foot or dominant power is exercised preventively upon "the sea" can the fulfillment of prophecy appear: "and there was no more sea," no more "elementary, latent error."
To deal only with visible error and audible sin would be but to touch the surface of evil, for, as our Leader significantly states, "The good which the material senses see not is the only absolute good; the evil which these senses see not is the only absolute evil" (Miscellaneous Writings, p. 299). We should realize that the all-permeating action of divine Principle is present to reach the unseen errors producing sensible evidence, and so destroy error's false claims in embryo. And as this preventive action of Truth is persistently affirmed and widely applied it will forestall the appearing in human experience of sickness, sin, and death, and their attendant distresses.