October 2

Concerning your question relative to the duration of the Bahá’í Dispensation. There is no contradiction between Bahá’u’lláh’s statement in the Íqán about the renewal of the City of God once every thousand years, and that of the Guardian in the Dispensation to the effect that the Bahá’í cycle will extend over a period of at least 500,000 years. The apparent contradiction is due to the confusion of the terms cycle and dispensation. For while the Dispensation of Bahá’u’lláh will last for at least one thousand years, His Cycle will extend still farther, to at least 500,000 years.

The Bahá’í cycle is, indeed, incomparable in its greatness. It includes not only the Prophets that will appear after Bahá’u’lláh, but all those who have preceded Him ever since Adam. These should, indeed, be viewed as constituting but preliminary stages leading gradually to the appearance of this supreme Manifestation of God. 

- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi; ‘Directives from the Guardian’)