The Báb, the Exalted One, is the Morn of Truth, the splendor of Whose light shineth throughout all regions. He is also the Harbinger of the Most Great Light, the Abha Luminary (Bahá'u'lláh). The Blessed Beauty (Bahá'u'lláh) is the One promised by the sacred books of the past, the revelation of the Source of light that shone upon Mount Sinai, Whose fire glowed in the midst of the Burning Bush. We are, one and all, servants of their threshold, and stand each as a lowly keeper at their door.