April 30

Undaunted by the prospect of the appalling adversities which, as predicted by Himself, were soon to overtake Him [Baha’u’llah]; on the eve of a second banishment which would be fraught with many hazards and perils, and would bring Him still farther from His native land, the cradle of His Faith, to a country alien in race, in language and in culture; acutely conscious of the extension of the circle of His adversaries, among whom were soon to be numbered a monarch more despotic than Násiri’d-Dín Sháh, and ministers no less unyielding in their hostility than either Hájí Mírzá Aqásí or the Amír-Nizám; undeterred by the perpetual interruptions occasioned by the influx of a host of visitors who thronged His tent, Bahá’u’lláh chose in that critical and seemingly unpropitious hour to advance so challenging a claim, to lay bare the mystery surrounding His person, and to assume, in their plenitude, the power and the authority which were the exclusive privileges of the One Whose advent the Báb had prophesied. 
Shoghi Effendi  (‘God Passes By’)