The condition of the government of Persia at the time of the Báb’s “formal assumption… of the authority of the promised Qá’im”

Muhammad Sháh, at so perilous an hour, was meanwhile rapidly sinking under the weight of his physical infirmities. The shallow-minded Hájí Mírzá Áqásí, now the pivot of state affairs, exhibited a vacillation and incompetence that seemed to increase with every extension in the range of his grave responsibilities. At one time he would feel inclined to support the verdict of the ‘ulamás; at another he would censure their aggressiveness and distrust their assertions; at yet another, he would relapse into mysticism, and, wrapt in his reveries, lose sight of the gravity of the emergency that confronted him. 

- Shoghi Effendi  (Chapter 3, ‘God Passes By’)

The effects of the “formal assumption by the Báb of the authority of the promised Qá’im”

The formal assumption by the Báb of the authority of the promised Qá’im, in such dramatic circumstances and in so challenging a tone, before a distinguished gathering of eminent Shí‘ah ecclesiastics, powerful, jealous, alarmed and hostile, was the explosive force that loosed a veritable avalanche of calamities which swept down upon the Faith and the people among whom it was born. It raised to fervid heat the zeal that glowed in the souls of the Báb’s scattered disciples, who were already incensed by the cruel captivity of their Leader, and whose ardor was now further inflamed by the outpourings of His pen which reached them unceasingly from the place of His confinement. It provoked a heated and prolonged controversy throughout the length and breadth of the land, in bazaars, masjids, madrisihs and other public places, deepening thereby the cleavage that had already sundered its people. 

- Shoghi Effendi  (Chapter 3, ‘God Passes By’)

A “period of ceaseless and unprecedented commotion” and Baha’u’llah’s “dual function of saving a sorely-stricken Faith from annihilation, and of ushering in the Dispensation destined to supersede it.”

The momentous happenings associated with the Báb’s incarceration in Máh-Kú and Chihríq, constituting as they did the high watermark of His Revelation, could have no other consequence than to fan to fiercer flame both the fervor of His lovers and the fury of His enemies. A persecution, grimmer, more odious, and more shrewdly calculated than any which Husayn Khán, or even Hájí Mírzá Áqásí, had kindled was soon to be unchained, to be accompanied by a corresponding manifestation of heroism unmatched by any of the earliest outbursts of enthusiasm that had greeted the birth of the Faith in either Shíráz or Isfahán. This period of ceaseless and unprecedented commotion was to rob that Faith, in quick succession, of its chief protagonists, was to attain its climax in the extinction of the life of its Author, and was to be followed by a further and this time an almost complete elimination of its eminent supporters, with the sole exception of One Who, at its darkest hour, was entrusted, through the dispensations of Providence, with the dual function of saving a sorely-stricken Faith from annihilation, and of ushering in the Dispensation destined to supersede it. 

- Shoghi Effendi  (Chapter 3, ‘God Passes By’)