He alone had been accorded the privilege of being called “the Master,” an honor from which His Father had strictly excluded all His other sons. Upon Him that loving and unerring Father had chosen to confer the unique title of “Sirru’lláh” (the Mystery of God), a designation so appropriate to One Who, though essentially human and holding a station radically and fundamentally different from that occupied by Bahá’u’lláh and His Forerunner, could still claim to be the perfect Exemplar of His Faith, to be endowed with super-human knowledge, and to be regarded as the stainless mirror reflecting His light. To Him, whilst in Adrianople, that same Father had, in the Súriy-i-_Gh_usn (Tablet of the Branch), referred as “this sacred and glorious Being, this Branch of Holiness,” as “the Limb of the Law of God,” as His “most great favor” unto men, as His “most perfect bounty” conferred upon them, as One through Whom “every mouldering bone is quickened,” declaring that “whoso turneth towards Him hath turned towards God,” and that “they who deprive themselves of the shadow of the Branch are lost in the wilderness of error.” To Him He, whilst still in that city, had alluded (in a Tablet addressed to Ḥájí Muḥammad Ibráhím-i-_Kh_alíl) as the one amongst His sons “from Whose tongue God will cause the signs of His power to stream forth,” and as the one Whom “God hath specially chosen for His Cause.” On Him, at a later period, the Author of the Kitáb-i-Aqdas, in a celebrated passage, subsequently elucidated in the “Book of My Covenant,” had bestowed the function of interpreting His Holy Writ, proclaiming Him, at the same time, to be the One “Whom God hath purposed, Who hath branched from this Ancient Root.” To Him in a Tablet, revealed during that same period and addressed to Mírzá Muḥammad Qulíy-i-Sabzívarí, He had referred as “the Gulf that hath branched out of this Ocean that hath encompassed all created things,” and bidden His followers to turn their faces towards it. To Him, on the occasion of His visit to Beirut, His Father had, furthermore, in a communication which He dictated to His amanuensis, paid a glowing tribute, glorifying Him as the One “round Whom all names revolve,” as “the Most Mighty Branch of God,” and as “His ancient and immutable Mystery.” He it was Who, in several Tablets which Bahá’u’lláh Himself had penned, had been personally addressed as “the Apple of Mine eye,” and been referred to as “a shield unto all who are in heaven and on earth,” as “a shelter for all mankind” and “a stronghold for whosoever hath believed in God.” It was on His behalf that His Father, in a prayer revealed in His honor, had supplicated God to “render Him victorious,” and to “ordain ... for Him, as well as for them that love Him,” the things destined by the Almighty for His “Messengers” and the “Trustees” of His Revelation. And finally in yet another Tablet these weighty words had been recorded: “The glory of God