December 8

The means by which Baha'u'llah has chosen to preserve the unity of Baha'i society is the institutions established in the Covenant which He made with those who accept Him. His Writings make it indisputably clear that the spiritual and social teachings thus set forth cannot be separated from the institutional means their Author has provided for their promotion. Particularly is this true of the interpretive functions with which the Guardianship has been endowed and the ultimate decision-making power invested in the Universal House of Justice, both of which are assured of unfailing Divine guidance. 
(From a letter dated July 25, 1997 written on behalf of the Universal House of Justice to an individual believer)