In this verse of the Aqdas, and again in paragraph 168 of the Aqdas, Bahá’u’lláh refers to Himself as the "Living Book". He cautions the "followers of every other Faith" against seeking "reasons in their Holy Books" for refuting the utterances of the "Living Book". He admonishes the people not to allow what has been recorded in the "Book" to prevent them from recognising His Station and from holding fast to what is in this new Revelation.
156. tribute to this Revelation, from the Pen of Him Who was My Herald [#135]
The "tribute" that Bahá’u’lláh quotes in this passage is from the Arabic Bayán.
157. "The Qiblih is indeed He Whom God will make manifest; whenever He moveth, it moveth, until He shall come to rest." [#137]
For a discussion of this verse see notes 7 and 8.
158. It is unlawful to enter into marriage save with a believer in the Bayán. Should only one party to a marriage embrace this Cause, his or her possessions will become unlawful to the other [#139]
The passage of the Bayán which Bahá’u’lláh here quotes draws the attention of the believers to the imminence of the coming of "Him Whom God will make manifest". Its prohibition of marriage with a non-Bábí and its provision that the property of a husband or wife who embraced the Faith could not lawfully pass to the non-Bábí spouse were explicitly held in abeyance by the Báb, and were subsequently annulled by Bahá’u’lláh before they could come into effect. Bahá’u’lláh, in quoting this law, points to the fact that, in revealing it, the Báb had clearly anticipated the possibility that the Cause of Bahá’u’lláh would rise to prominence before that of the Báb Himself.