"Christian Scientists," writes Mary Baker Eddy in "Science and Health with Key to the Scriptures" (p. 451), "must live under the constant pressure of the apostolic command to come out from the material world and be separate." The Discoverer and Founder of Christian Science here refers to Paul's questions to the Christians in Corinth as found in the sixth chapter of II Corinthians: "What concord hath Christ with Belial?" and, "What agreement hath the temple of God with idols?" And Mrs. Eddy paraphrases the apostle's injunction, "Come out from among them, and be ye separate."
The obedient Christian Scientist is, then, under constant pressure to spiritualize his thinking, to live in accord with his highest understanding of the ever-present and all-knowing God, to whom he bears witness and from whom he is, according to Jesus' precept and proof, inseparable. He is under the continued impulsion to distinguish between the true theology of Jesus and false theologies. He must be ever watchful to see that he is not accepting into his thinking any subtle suggestions of the false theologies which conceive of God as knowing both good and evil and of man as at once material and spiritual. Such theologies are like the false prophets, referred to by Jesus, who come to us in sheep's clothing, but who inwardly are ravening wolves.
The theology which Jesus knew and bequeathed to us is simple, straight, clear, demonstrable. It is an acknowledgment of one God, or Father. It is an affirmation of man's sonship with the Father—that is, his inseparable relationship, as effect, with God, as cause. It includes the healing of sickness, as well as of sin, as a present evidence of that inseparability. "I and my Father are one" (John 10:30) was the unequivocal statement of his conviction. The Master's instantaneous cures, as related in the Gospels, were the proof of the absolute and scientific correctness of his theology.