In that portion of the Sermon on the Mount called the Beatitudes, Jesus offered the disciples a foundation of meekness, righteousness, mercy, purity, peace, and comfort. The assurance was given that those who sought and secured these qualities would realize blessedness. No limitation of time or location was placed upon the promises. Jesus and the disciples proved their practical value, and thousands are repeating the proofs today. In the sixth beatitude is the promise that the pure in heart shall see God, and that blessedness shall accompany this perception.
On page 587 of "Science and Health with Key to the Scriptures" Mrs. Eddy, the Discoverer and Founder of Christian Science, defines "heart" as "mortal feelings, motives, affections, joys, and sorrows." So it is these mental attitudes that must be purified if one is to obtain a true perception of God and receive the promised reward of blessedness, or spiritual happiness. Certainly the bestowal of joy on the human thought is a priceless benediction.
In the accomplishment of mental purity three qualities are essential: clearness, freedom, and completeness. If one's thinking is held clearly, freely, and completely to infinite good, one can realize nothing but good in his experience. When one's motives and affections are basically pure, one will assuredly be blessed and happy.
Thoughts that are not spiritually pure may be likened to frost-covered windows. The frosty shapes are often beautiful, sometimes fantastic, always ephemeral. Invariably they obstruct the outlook, and as long as they remain a clear view is not obtained through the window; many a warm sunbeam or warmth within the room is needed to remove the last trace of frost. Likewise, should one allow such errors as dishonesty, envy, or hatred to obscure his thinking, the clear perception of man's true being as the image and likeness of God would be lost. Material appearance may seem beautiful; often it is discordant; never is it substantial. As one comes to recognize this and allow ideas of Life, Truth, and Love to displace false beliefs, he will eventually see himself as he really is, the blessed child of God, beholding through clear spiritual vision his perfect self. The same clear thinking will correct in the individual consciousness any material illusions concerning one's fellow men, and will reveal all creation as spiritual, harmonious, and eternal.
Freedom in thinking can be obtained only by removing whatever binds human thought to beliefs of limitation. In Acts we read that Paul and Silas, when imprisoned, "prayed, and sang praises unto God," and that "every one's bands were loosed." Prayer and gratitude purified their thoughts, enabling them to see in some degree their true position as the children of God, forever free.
Today, exaltation of thought in prayer or praise enthrones in consciousness Him who is "of purer eyes than to behold evil," thereby exchanging the confining bonds of mortal mind for the limitless scope and harmonious government of divine Mind. Living under this harmonious government, one is blessed with true liberty. Purity may be gained by freeing thought from malice, lack, ingratitude, or other deceiving errors, and acknowledging in every motive and desire the rule of God alone.
Completeness distinguishes the pure in heart. Christ Jesus was able to overcome all evil because he had a thorough understanding of God, good. He met every claim of error with the whole-hearted affirmation of Truth. Never losing sight of man as the complete or perfect image and likeness of God enabled Jesus to restore the withered hand "whole, like as the other;" and the woman with the issue of blood "was made whole from that hour." In short, the result of his pure thinking was perfect demonstration.
As purity is attained in one's heart, one obtains a correct spiritual perception of God. The pure-minded, seeing God through clear, free spiritual understanding, recognize Him as infinite Life, Truth, Love, Mind. Ignorance or fear, manifested in any inharmonious way, such as illness, accident, or lack of ability or supply, is recognized as unreal. These errors are thus unmasked by the truth. The heart filled with love has no place in it for fear, and the enlightenment of Mind dispels ignorance wherever it appears. Error has no place in a pure heart.
Unmasking error with the truth destroys error. As the truth appears and is accepted, the discordant manifestation—be it illness, accident, or lack—vanishes. Then God is seen through His reflection, spiritual man. This pure revelation bestows health, abundance, and happiness, thus presenting man as divinely blessed.
Under the marginal heading "Purity the path to perfection," Mrs. Eddy has written (Science and Health, p. 337): "Christian Science demonstrates that none but the pure in heart can see God, as the gospel teaches. In proportion to his purity is man perfect; and perfection is the order of celestial being which demonstrates Life in Christ, Life's spiritual ideal." One is traveling this path of purity when he is gaining each day a clearer perception of Truth, a freer idea of Life, and a larger understanding of Love.