With some evident understanding of the so-called carnal or mortal mind and the limits to which it may go in evil activity, the prophet Jeremiah wrote (17:9), "The heart is deceitful above all things, and desperately wicked: who can know it?" But he added, "I the Lord search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings." As Christian Scientists we recognize that we are living in a period of great moral chemicalization. The leaven of the Christ, Truth, as revealed to Mary Baker Eddy is acting upon false material belief. To human sense it appears in one's experience as a process of cleansing and purification.

In this process of change, in which all error must give way to Truth, the false claim of mind and existence as material is being stirred to its depths. The light of Truth is forcing latent evil to the surface in order that it may be seen for the lie it truly is and destroyed, even as we read in Luke's Gospel (12:2, 3): "There is nothing covered, that shall not be revealed; neither hid, that shall not be known. Therefore whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the housetops."

Realizing the upheaval which the Christ, Truth, as revealed in Christian Science would bring to pass, and understanding its purifying effect, Mrs. Eddy writes in her textbook, "Science and Health with Key to the Scriptures" (p. 540): "In Isaiah we read: 'I make peace, and create evil. I the Lord do all these things;' but the prophet referred to divine law as stirring up the belief in evil to its utmost, when bringing it to the surface and reducing it to its common denominator. nothingness. The muddy river-bed must be stirred in order to purify the stream. In moral chemicalization, when the symptoms of evil, illusion, are aggravated, we may think in our ignorance that the Lord hath wrought an evil; but we ought to know that God's law uncovers so-called sin and its effects, only that Truth may annihilate all sense of evil and all power to sin."