Obedience to the National Spiritual Assembly is the Basis for Unity

"...the Guardian wishes me to again affirm his view that the authority of the National Spiritual Assembly is undivided and unchallengeable in all matters pertaining to the administration of the Faith ... and that, therefore, the obedience of individual Bahá'ís, delegates, groups, and assemblies to that authority is imperative, and should be whole-hearted and unqualified.

(From a letter written on behalf of Shoghi Effendi to the National Spiritual Assembly of the United States and Canada, June 11, 1934)