Bahá’u’lláh “describes, briefly and graphically, the impact of the onrushing force of the Divine Summons upon His entire being”

In another passage He describes, briefly and graphically, the impact of the onrushing force of the Divine Summons upon His entire being—an experience vividly recalling the vision of God that caused Moses to fall in a swoon, and the voice of Gabriel which plunged Muhammad into such consternation that, hurrying to the shelter of His home, He bade His wife, Khadíjih, envelop Him in His mantle. “During the days I lay in the prison of Tihrán,” are His own memorable words, “though the galling weight of the chains and the stench-filled air allowed Me but little sleep, still in those infrequent moments of slumber I felt as if something flowed from the crown of My head over My breast, even as a mighty torrent that precipitateth itself upon the earth from the summit of a lofty mountain. Every limb of My body would, as a result, be set afire. At such moments My tongue recited what no man could bear to hear.” (Bahá’u’lláh, ‘Epistle to the Son of the Wolf’) 

- Shoghi Effendi  (‘God Passes By’)

“a Revelation was…born amidst the darkness of a subterranean dungeon in Tihrán”

A Revelation, hailed as the promise and crowning glory of past ages and centuries, as the consummation of all the Dispensations within the Adamic Cycle, inaugurating an era of at least a thousand years’ duration, and a cycle destined to last no less than five thousand centuries, signalizing the end of the Prophetic Era and the beginning of the Era of Fulfillment, unsurpassed alike in the duration of its Author’s ministry and the fecundity and splendor of His mission—such a Revelation was…born amidst the darkness of a subterranean dungeon in Tihrán—an abominable pit that had once served as a reservoir of water for one of the public baths of the city. Wrapped in its stygian gloom, breathing its fetid air, numbed by its humid and icy atmosphere, His feet in stocks, His neck weighed down by a mighty chain, surrounded by criminals and miscreants of the worst order, oppressed by the consciousness of the terrible blot that had stained the fair name of His beloved Faith, painfully aware of the dire distress that had overtaken its champions, and of the grave dangers that faced the remnant of its followers—at so critical an hour and under such appalling circumstances the “Most Great Spirit,” as designated by Himself, and symbolized in the Zoroastrian, the Mosaic, the Christian, and Muhammadan Dispensations by the Sacred Fire, the Burning Bush, the Dove and the Angel Gabriel respectively, descended upon, and revealed itself, personated by a “Maiden,” to the agonized soul of Bahá’u’lláh. 

- Shoghi Effendi  (‘God Passes By’)

Bahá’u’lláh’s inspiring dream while in Siyáh-Chál

One night, in a dream, this all-glorious word was heard from all sides: ‘Verily We will aid Thee to triumph by Thyself and by Thy pen. Grieve not for that which hath befallen Thee, and have no fear. Truly Thou art of them that are secure. Ere long shall the Lord send forth and reveal the treasures of the earth, men who shall give Thee the victory by Thyself and by Thy name wherewith the Lord hath revived the hearts of them that know.’” 

- Baha’u’llah  (‘Epistle to the Son of the Wolf’)