“In a letter dictated by Baha’u’llah and addressed by Mirza Aqa Jan, His amanuensis, to 'Abdu'l-Bahá while the latter was on a visit to Beirut, we read the following:
"Praise be to Him Who hath honored the Land of Ba (Beirut) through the presence of Him round Whom all names revolve. All the atoms of the earth have announced unto all created things that from behind the gate of the Prison-city there hath appeared and above its horizon there hath shone forth the Orb of the beauty of the great, the Most Mighty Branch of God -- His ancient and immutable Mystery -- proceeding on its way to another land. Sorrow, thereby, hath enveloped this Prison-city, whilst another land rejoiceth... Blessed, doubly blessed, is the ground which His footsteps have trodden, the eye that hath been cheered by the beauty of His countenance, the ear that hath been honored by hearkening to His call, the heart that hath tasted the sweetness of His love, the breast that hath dilated through His remembrance, the pen that hath voiced His praise, the scroll that hath borne the testimony of His writings."
“Abdu'l-Bahá, writing in confirmation of the authority conferred upon Him by Baha’u’llah, makes the following statement:
"In accordance with the explicit text of the Kitab-i-Aqdas Baha’u’llah hath made the Center of the Covenant the Interpreter of His Word -- a Covenant so firm and mighty that from the beginning of time until the present day no religious Dispensation hath produced its like."
(Shoghi Effendi, The World Order of Baha'u'llah, p. 136)