Written by: Moojan Momen
O SON OF SPIRIT!
The best beloved of all things in My sight is Justice; turn not away therefrom if thou desirest Me, and neglect it not that I may confide in thee. By its aid thou shalt see with thine own eyes and not through the eyes of others, and shalt know of thine own knowledge and not through the knowledge of thy neighbor. Ponder this in thy heart; how it behooveth thee to be. Verily justice is My gift to thee and the sign of My loving-kindness. Set it then before thine eyes.
During the time that Baha'u'llah was in Baghdad, before he had put forward any claim, his writings were of such quality that many of the Babis guessed his claim and were openly calling him "He whom God shall make manifest," whom the Bab had prophesied. These early writings included a book of proofs, the Kitab-i-Iqan (the Book of Certitude); a book of spiritual and moral aphorisms, the Hidden Words ; and two mystical treatises, the Seven Valleys and the Four Valleys, as well as a great deal of mystical poetry. While Baha'u'llah was in Edirne, he wrote a large number of works announcing his claim to the Babis as well as a series of epistles to the kings and rulers of the world—proclaiming his mission, explaining his teachings, and calling upon these leaders to take the first steps toward world peace.
The bulk of Baha'u'llah's writings date from the period that he was in 'Akka, particularly his last years in Bahji where he concentrated on dictating his works, which were usually in response to the numerous letters arriving for him. His most important book, the Kitab-i-Aqdas (the Most Holy Book) dates from the early 'Akka period (1873) and contains laws, theology, social teachings, and instruction regarding Baha'i institutions. This was followed by a series of tablets (most of Baha'u'llah's shorter works are referred to as "tablets") on his social teachings and the reforms that he envisaged for the world. The Book of the Covenant also belongs to this period; this work was read aloud after his passing and appointed 'Abdu'l-Baha as his successor.
The writings of 'Abdu'l-Baha are regarded as divinely inspired and are accounted as part of Baha'i scriptures. These include a number of works that 'Abdu'l-Baha wrote during the lifetime of his father, such as the Secret of Divine Civilization, a treatise on governance and on social and economic development; and A Traveler's Narrative, a history of the Babi and Baha'i Faith.