Bahá’u’lláh compares the interventions of the Divine Revelations to the return of spring. The Messengers of God are not merely teachers, although this is one of their primary functions. Rather, the spirit of their words, together with the example of their lives, has the capacity to tap the roots of human motivation and to induce fundamental and lasting change. Their influence opens new realms of understanding and achievement: And since there can be no tie of direct intercourse to bind the one true God with His creation, and no resemblance whatever can exist between the transient and the Eternal, the contingent and the Absolute, He hath ordained that in every age and dispensation a pure and stainless Soul be made manifest in the kingdoms of earth and heaven.... Led by the light of unfailing guidance, and invested with supreme sovereignty, They [the Messengers of God] are commissioned to use the inspiration of Their words, the effusions of Their infallible grace and the sanctifying breeze of Their Revelation for the cleansing of every longing heart and receptive spirit from the dross and dust of earthly cares and limitations. Then, and only then, will the Trust of God, latent in the reality of man, emerge ... and implant the ensign of its revealed glory upon the summits of men’s hearts.(35) Without this intervention from the world of God, human nature remains the captive of instinct, as well as of unconscious assumptions and patterns of behavior that have been culturally determined: Having created the world and all that liveth and moveth therein, He [God] ... chose to confer upon man the unique distinction and capacity to know Him and to love Him--a capacity that must needs be regarded as the generating impulse and the primary purpose underlying the whole of creation.... Upon the inmost reality of each and every created thing He hath shed the light of one of His names, and made it a recipient of the glory of one of His attributes. Upon the reality of man, however, He hath focused the radiance of all of His names and attributes, and made it a mirror of His own Self. Alone of all created things man hath been singled out for so great a favor, so enduring a bounty. These energies with which the ... Source of heavenly guidance hath endowed the reality of man lie, however, latent within him, even as the flame is hidden within the candle and the rays of light are potentially present in the lamp. The radiance of these energies may be obscured by worldly desires even as the light of the sun can be concealed beneath the dust and dross which cover the mirror. Neither the candle nor the lamp can be lighted through their own unaided efforts, nor can it ever be possible for the mirror to free itself from its dross. It is clear and evident that until a fire is kindled the lamp will never be ignited, and unless the dross is blotted out from the face of the mirror it can never represent the image of the sun nor reflect its light and glory.(36)