The effect of every word uttered by the Manifestation of God

Every word that proceedeth Out of the mouth of God is endowed with such potency as can instil new life into every human frame, if ye be of them that comprehend this truth. All the wondrous works ye behold in this world have been manifested through the operation of His supreme and most exalted Will, His wondrous and inflexible Purpose. 

- Bahá'u'lláh  (‘Gleanings from the Writings of Bahá'u'lláh’; The Compilation of Compilations, vol. III, Social and Economic Development)