The readiness of your Assembly, as expressed in your recently cabled message, to transfer the National Bahá’í Secretariat to the vicinity of the Temple in Wilmette has evoked within me the deepest feelings of thankfulness and joy. Your historic decision, so wise and timely, so surprising in its suddenness, so far-reaching in its consequences, is one that I cannot but heartily and unreservedly applaud. To each one of your brethren in the Faith, throughout the United States and Canada, who are witnessing, from day to day and at an ever-hastening speed, the approaching completion of their National House of Worship, the great Mother Temple of the West, your resolution to establish within its hallowed precincts and in the heart of the North American continent the Administrative Seat of their beloved Faith cannot but denote henceforward a closer association, a more constant communion, and a higher degree of coordination between the two primary agencies providentially ordained for the enrichment of their spiritual life and for the conduct and regulation of their administrative affairs. To the far-flung Bahá’í communities of East and West, most of which are being increasingly proscribed and ill-treated, and none of which can claim to have had a share of the dual blessings which a specially designed and constructed House of Worship and a fully and efficiently functioning Administrative Order invariably confer, the concentration in a single locality of what will come to be regarded as the fountain-head of the community’s spiritual life and what is already recognized as the mainspring of the administrative activities, signalizes the launching of yet another phase in the slow and imperceptible emergence, in these declining times, of the model Bahá’í community—a community divinely ordained, organically united, clear-visioned, vibrant with life, and whose very purpose is regulated by the twin directing principles of the worship of God and of service to one’s fellow-men.
— Shoghi Effendi, Letter dated 4 July 1939 in Messages to America, p. 23-26