Only when the lamp of search, of earnest striving, of longing desire, of passionate devotion, of fervid love, of rapture, and ecstasy, is kindled within the seeker’s heart, and the breeze of His loving-kindness is wafted upon his soul, will the darkness of error be dispelled, the mists of doubts and misgivings be dissipated, and the lights of knowledge and certitude envelop his being.... Then will the manifold favors and outpouring grace of the holy and everlasting Spirit confer such new life upon the seeker that he will find himself endowed with a new eye, a new ear, a new heart, and a new mind.... Gazing with the eye of God, he will perceive within every atom a door that leadeth him to the stations of absolute certitude. He will discover in all things the ... evidences of an everlasting Manifestation. When the channel of the human soul is cleansed of all worldly and impeding attachments, it will unfailingly perceive the breath of the Beloved across immeasurable distances, and will, led by its perfume, attain and enter the City of Certitude.... That city is none other than the Word of God revealed in every age and dispensation.... All the guidance, the blessings, the learning, the understanding, the faith, and certitude, conferred upon all that is in heaven and on earth, are hidden and treasured within these Cities.(16) No overt reference is made to Bahá’u’lláh’s own as yet unannounced mission; rather, The Book of Certitude is organized around a vigorous exposition of the mission of the martyred Báb. Not the least of the reasons for the book’s powerful influence on the Bábí community, which included a number of scholars and former seminarians, was the mastery of Islamic thought and teaching its author displays in demonstrating the Báb’s claim to have fulfilled the prophecies of Islam. Calling on the Bábís to be worthy of the trust which the Báb had placed in them and of the sacrifice of so many heroic lives, Bahá’u’lláh held out before them the challenge not only of bringing their personal lives into conformity with the Divine teachings, but of making their community a model for the heterogeneous population of Baghdad, the Iraqi provincial capital. Though living in very straitened material circumstances, the exiles were galvanized by this vision. One of their company, a man called Nabíl, who was later to leave a detailed history of both the ministries of the Báb and Bahá’u’lláh, has described the spiritual intensity of those days: Many a night no less than ten persons subsisted on no more than a pennyworth of dates. No one knew to whom actually belonged the shoes, the cloaks, or the robes that were to be found in their houses. Whoever went to the bazaar could claim that the shoes upon his feet were his own, and each one who entered the presence of Bahá’u’lláh could affirm that the cloak and robe he then wore belonged to him.... O, for the joy of those days, and the gladness and wonder of those hours!(17)