The post of sentinel is given to those appointed in all armed services in wartime as a duty to be carried out without hindrance or failure. The sentinel must be thoroughly alert to challenge every effort of an intruder to find entrance into the camp through subtlety or force.
Christians are soldiers of Christ, followers of Christ Jesus, forever watchful to thwart any attempt of evil to invade the sacred precincts of their conscious being. It is the duty of the individual at all times to defend and prove his understanding of man's real being made in the image and likeness of God, Spirit. This is the truth the Master taught and illustrated in his ministry of healing and redeeming mankind. The foe is false belief, the carnal or fleshly mind asserting that man is mortal, of material conception and birth, compounded of both good and evil thoughts and intents.
Mrs. Eddy, through her prayerful devotion to the study of the Scriptures, received the divine revelation of God as Spirit and of man as His spiritual likeness. She then was able to establish her church and movement on this spiritual understanding of God, denominating it Christian Science. She makes this revealing statement: "The Christlike understanding of scientific being and divine healing includes a perfect Principle and idea,—perfect God and perfect man,—as the basis of thought and demonstration." Science and Health, p. 259;