Why is it that we immediately and instinctively realize there can be no unethical practice of Christian Science? Isn't it because the practice of this Science is the practice of God's invariable law, and this law permits no deviation from the rule of Principle, Truth, and Love? Mary Baker Eddy, the one who discovered and founded the Science of Christ, once answered the question, "How would you define Christian Science?" in this way: "As the law of God, the law of good, interpreting and demonstrating the divine Principle and rule of universal harmony." Rudimental Divine Science, p. 1; The practice of this law is a healing practice and an ethical practice.
The invariability of God's law is our assurance that it is always available and always completely applicable to our human needs. But this law's invariability is two-pronged. It is unvaryingly available, but in God's way. We cannot vary divine law to suit our personal purposes. We must accept it as it is, as God has established it in His infinite wisdom. We must conform to its requirements with our whole heart if we are to be in the line of its action and its blessings. We cannot willfully or ignorantly transgress God's law and expect at the same time to benefit from its self-enforcing action.
Human law is effective only as it is enforced. God's law, however, is self-enforcing. It does not depend upon someone to make it effective; it is always operative everywhere. Obedience to this law, honest conformity of our thoughts and actions to its operation, opens and fits our heart to receive its infinite blessings. Disobedience to it closes our thought to its benefits, so that we forfeit them. Thus God's law invariably enforces itself.