[2] The book contains elements of Bábí law, discussion of religious concepts, and the glorification of He whom God shall make manifest.
[2] Shoghi Effendi considered it a "eulogy of the Promised One", who had abrogated the laws of Islam, and prophesied about the coming of the Baháʼí Faith.
[1] Among the main themes of the Bayán are the mystic character of action, the prohibition of causing grief to others, refinement, perfection and the spiritualization of life and language.
Saiedi concludes that these can then only have a strategic and symbolic meaning, and were meant to break through traditions and to focus the Báb's followers on obedience to He whom God shall make manifest.
[12][13] The Báb eliminated any form of successorship or vicegerency from his religion and stated that no one else's writings would be authoritative after his death to the time of He Whom God shall make Manifest.
[12] In one section of the book the author states that the Bayán may become abrogated within a few years of the Báb's death, and that He Whom God shall make Manifest may appear during Azal's time, then later he states that the abrogation of the Bayán and the appearance of the Promised One could not occur before two thousand years.