Its uniqueness is that for the first time in religious history the Manifestation of God, in clear and unambiguous language, provides for the authorized interpretation of His Word, and ensures the continuity of the divinely appointed authority which flows from the Source of the Faith.
Interpretation of Scripture has always in earlier religions been a most fertile source of schism.

Baha'u'llah, in the Book of His Covenant, vested in His eldest son, 'Abdu'l-Baha, full powers for the interpretation of His Writings and for the direction of His Cause.

'Abdu'l-Baha, in His Will and Testament, appointed His eldest grandson, Shoghi Effendi, Guardian of the Faith and sole interpreter of the Writings.

There is no priesthood within the Faith and no individual may claim special station or guidance; authority is vested in institutions created within the Baha'i Scriptures.
By virtue of these unique provisions, the Faith of Baha'u'llah has been preserved from schism, from the depredations of unauthorized leadership, and above all from the infiltration of man-made doctrines and theories, which in the past have shattered the unity of religions.

Pure and inviolate, the revealed Word of Baha'u'llah, with its authorized interpretation, remains throughout the Dispensation the uncorrupted and incorruptible source of spiritual life to men.
In 1968 the Universal House of Justice took action to provide for the future carrying out of the specific functions of protection and propagation vested in the Hands of the Cause, by the establishment of Continental Board of Counsellors.