Circumstances in which Baha’u’llah “received the first intimation of His sublime Mission” – comparison to those of other Manifestations of God

It was in such dramatic circumstances, recalling the experience of Moses when face to face with the Burning Bush in the wilderness of Sinai, the successive visions of Zoroaster, the opening of the heavens and the descent of the Dove upon Christ in the Jordan, the cry of Gabriel heard by Muhammad in the Cave of Hira, and the dream of the Báb, in which the blood of the Imam Ḥusayn touched and sanctified His lips, that Bahá’u’lláh, He “around Whom the Point of the Bayán hath revolved,” and the Vehicle of the greatest Revelation the world has yet seen, received the first intimation of His sublime Mission, and that a ministry which, alike in its duration and fecundity, is unsurpassed in the religious history of mankind, was inaugurated. It was on that occasion that the “Most Great Spirit,” as designated by Bahá’u’lláh Himself, revealed itself to Him, in the form of a “Maiden,” and bade Him “lift up” His “voice between earth and heaven”—that same Spirit which, in the Zoroastrian, the Mosaic, the Christian, and Muḥammadan Dispensations, had been respectively symbolized by the “Sacred Fire,” the “Burning Bush,” the “Dove,” and the “Angel Gabriel.” 

- Shoghi Effendi  (‘Messages to America’)