The question is sometimes asked, "Why does Christian Science emphasize handling error since it teaches that God is All and that His creation, including man, is perfect?"
Why handle error? One might as well ask: "Why correct a mistake in a bank balance? Why stop sinning?" A mathematical mistake is corrected by thorough application of the rules of mathematics. If one fails to understand or to apply the rules of mathematics, he will encounter difficulties in the solution of his problems. Likewise, to solve problems of sin, disease, limitation, and insecure human relationships one must understand and apply the scientific rule of being, based on the perfection of God and man.
When we understand that there is but one Mind and from this basis reject idolatry, we find problems of inharmony in human experience giving place to health, peace, and well-being. Recognizing that there is but one God, one Mind, we see that man naturally loves God with his whole heart and also loves his neighbor as himself. He is conscious of his unity with Spirit, pure and all-pervading; with Soul, substantial and beautiful; and with Truth, permanent and powerful. Through understanding true being, mankind progressively proves that error is temporal and unreal.