March 31

A more significant light… is shed on this episode, marking the Declaration of the Mission of the Báb, by the perusal of that “first, greatest and mightiest” of all books in the Bábí Dispensation, the celebrated commentary on the Súrih of Joseph, the first chapter of which, we are assured, proceeded, in its entirety, in the course of that night of nights from the pen of its divine Revealer. The description of this episode by Mullá Husayn, as well as the opening pages of that Book attest the magnitude and force of that weighty Declaration. A claim to be no less than the mouthpiece of God Himself, promised by the Prophets of bygone ages; the assertion that He was, at the same time, the Herald of One immeasurably greater than Himself; the summons which He trumpeted forth to the kings and princes of the earth; the dire warnings directed to the Chief Magistrate of the realm, Muhammad Sháh; the counsel imparted to Hájí Mírzá Aqásí to fear God, and the peremptory command to abdicate his authority as grand vizir of the Sháh and submit to the One Who is the “Inheritor of the earth and all that is therein”; the challenge issued to the rulers of the world proclaiming the self-sufficiency of His Cause, denouncing the vanity of their ephemeral power, and calling upon them to “lay aside, one and all, their dominion,” and deliver His Message to “lands in both the East and the West”—these constitute the dominant features of that initial contact that marked the birth, and fixed the date, of the inception of the most glorious era in the spiritual life of mankind. 
(Shoghi Effendi, ‘God Passes By’)