Full harmony, however, as well as cooperation among the various local assemblies and the members themselves, and particularly between each assembly and the national body, is of the utmost importance, for upon it depends the unity of the Cause of God, the solidarity of the friends, the full, speedy and efficient working of the spiritual activities of His loved ones....

The various Assemblies, local and national, constitute today the bedrock upon the strength of which the Universal House [of Justice] is in future to be firmly established and raised. Not until these function vigorously and harmoniously can the hope for the termination of this period of transition be realized....

... bear in mind that the keynote of the Cause of God is not dictatorial authority but humble fellowship, not arbitrary power, but the spirit of frank and loving consultation. Nothing short of the spirit of a true Bahá’í can hope to reconcile the principles of mercy and justice, of freedom and submission, of the sanctity of the right of the individual and of self-surrender, of vigilance, discretion and prudence on the one hand, and fellowship, candor and courage on the other.

The local Spiritual Assemblies of a country are linked together and co-ordinating through another elected body of nine members, the National Spiritual Assembly. This body comes into being by means of an annual election held by elected delegates representing the local Bahá’í communities.... The National Convention in which the delegates are gather together is composed of an elective body based upon the principle of proportional representation.... These National Conventions are preferably held during the period of Ridván, the twelve days beginning April 21st which commemorate the Declaration made by Bahá’u’lláh in the Garden of Ridván near Baghdád. The recognition of delegates is vested in the outgoing National Spiritual Assembly.

A National Convention is an occasion for deepening one’s understanding of Bahá’í activities and of sharing reports of national and local activities for the period of the elapsed year.... The function of a Bahá’í delegate is limited to the duration of the National Convention and participation in the election of the new National Spiritual Assembly. While gathered together, the delegates are a consultative and advisory body whose recommendations are to be carefully considered by the members of the elected National Spiritual Assembly....

The relation of the National Spiritual Assembly to the local Spiritual Assemblies and to the body of the believers in the country is thus defined in the letters of the Guardian of the Cause:

Regarding the establishment of “National Assemblies,” it is of vital importance that in every country, where the conditions are favorable and the number of the friends has grown and reached a considerable size ... that a “National Spiritual Assembly” be immediately established, representative of the friends throughout that country.

Its immediate purpose is to stimulate, unify and coordinate by frequent personal consultations, the manifold activities of the friends as well as the local Assemblies; and by keeping in close and constant touch with the Holy Land, initiate measures, and direct in general the affairs of the Cause in that country.

It serves also another purpose, no less essential than the first, as in the course of time it shall evolve into the National House of Justice (referred to in ‘Abdu’l-Bahá’s Will as the “secondary House of Justice”), which according to the explicit text of the Testament will have, in conjunction with the other National Assemblies throughout the Bahá’í world, to elect directly the members of the International House of Justice, that Supreme Council that will guide, organize and unify the affairs of the Movement throughout the world....

This National Spiritual Assembly, which, pending the establishment of the Universal House of Justice, will have to be re-elected once a year, obviously assumes grave responsibilities, for it has to exercise full authority over all the local Assemblies in its province, and will have to direct the activities of the friends, guard vigilantly the Cause of God, and control and supervise the affairs of the Movement in general.