1846: The Christian governor of Isfahan embraced Islam when witnessed the Báb reveal an exposition concerning Prophet Muhammad’s “Specific Mission” at his request

Manuchihr Khan the
Governor of Isfahan

The Mu’tamíd himself came one day to visit the Báb and, while seated in the midst of an assemblage of the most brilliant and accomplished divines of Isfáhán, requested Him to expound the nature and demonstrate the validity of the Nubuvvat-i-Khassih. [Muhammad’s “Specific Mission.”]  He had previously, in that same gathering, called upon those who were present to adduce such proofs and evidences in support of this fundamental article of their Faith as would constitute an unanswerable testimony for those who were inclined to repudiate its truth. No one, however, seemed capable of responding to his invitation. “Which do you prefer,” asked the Báb, “a verbal or a written answer to your question?” “A written reply,” he answered, “not only would please those who are present at this meeting, but would edify and instruct both the present and future generations.”

The Báb instantly took up His pen and began to write. In less than two hours, He had filled about fifty pages with a most refreshing and circumstantial enquiry into the origin, the character, and the pervasive influence of Islám. The originality of His dissertation, the vigour and vividness of its style, the accuracy of its minutest details, invested His treatment of that noble theme with an excellence which no one among those who were present on that occasion could have failed to perceive. With masterly insight, He linked the central idea in the concluding passages of this exposition with the advent of the promised Qá’im and the expected “Return” of the Imám Husayn.  He argued with such force and courage that those who heard Him recite its verses were astounded by the magnitude of His revelation. No one dared to insinuate the slightest objection—much less, openly to challenge His statements. The Mu’tamíd could not help giving vent to his enthusiasm and joy. “Hear me!” he exclaimed. “Members of this revered assembly, I take you as my witnesses. Never until this day have I in my heart been firmly convinced of the truth of Islám. I can henceforth, thanks to this exposition penned by this Youth, declare myself a firm believer in the Faith proclaimed by the Apostle of God. I solemnly testify to my belief in the reality of the superhuman power with which this Youth is endowed, a power which no amount of learning can ever impart.” With these words he brought the meeting to an end. 

- Nabil  (‘The Dawn-Breakers’, chapter 10)