The Baha'i sacred writings flow out from the two central documents of the Baha'i Revelation, the Kitab-i-Ahd, the Covenant of Baha'u'llah, and the Will and Testament of 'Abdu'l-Baha. All the other writings and teachings receive their life, their relevance, and their real inner spiritual force and sustenance, from out the wellspring of these two Most Mighty Documents, one written within (the Kitab-i-Ahd) the other on the back (Will and Testament) sealed with seven seals.
No person can really in good faith, even consider themselves to be a Baha'i in truth, unless they can be said to have first at least read and attempted to understand, let alone believed in and been obedient to the contents and provisions of these two documents combined together as one single scroll. This is something similar to what Jesus said, when he said that "eating" the bread (teachings) was approaching him (in understanding) and "drinking" the wine (covenant) was belief (see John 6:35 KJV).
The Kitab-i-Ahd and the Will and Testament together comprise the prophesied continuation of the everlasting Covenant given in the Bible because in His Covenant, Baha'u'llah establishes the throne of King David as the Executive Branch of His Universal House of Justice. This Everlasting Covenant was begun with Adam, passed down through Abraham and David, and promised by Jesus Christ to be established in the world today, 2000 years since his birth and first appearance. They are both provided here for the first time, on line, with a suitable introduction, free of price, for all to have access to, in the light and knowledge of the "unfurled banner" of the genealogy of Baha'u'llah back to King David.