Clear and full expositions are given of many truths which were but dimly foreshadowed in previous revelations, and the eternal principles of truth, which all the Prophets have taught, have been applied to the problems which are facing the world today--problems of the utmost complexity and difficulty, many of which had not arisen in the days of former Prophets.

It is evident that this full record of authentic revelation must have a powerful effect in preventing misunderstandings in the future and in clearing up those misunderstandings of the past which have kept the various sects asunder.
The Baha'i Covenant The Baha'i Revelation is unprecedented and unique in still another way.
Before the death of Baha'u'llah He repeatedly put in writing a Covenant appointing his eldest son 'Abdu'l-Baha, Whom He often refers to as "The Branch," or "The Most Great Branch," as the authorized interpreter of the teachings, and declaring that any explanations or interpretations given by Him are to be accepted as of equal validity with the words of Baha'u'llah Himself.

In His Will and Testament He says:-- Consider that which We revealed in Our Most Holy Book: "When the ocean of My presence hath ebbed and the Book of My Revelation is ended, turn your faces toward Him Whom God hath purposed, Who hath branched from this Ancient Root." The object of this sacred verse is none other except the Most Mighty Branch ('Abdu'l-Baha).
And in the Tablet of the Branch, in which He explains the station of 'Abdu'l-Baha, He says:-- Render thanks unto God, O people, for His appearance; for verily He is the most great Favor unto you, the most perfect bounty upon you; and through Him every mouldering bone is quickened.

Whoso turneth towards Him hath turned towards God, and whoso turneth away from Him hath turned away from My Beauty, hath repudiated My Proof, and transgressed against Me.
After the death of Baha'u'llah, 'Abdu'l-Baha had abundant opportunities, both in His own home and on His extensive travels, of meeting people from all parts of the world and of all shades of opinion.

He heard all their questions, their difficulties and objections, and gave full explanations which were carefully recorded in writing.