September 19

The Faith is divided into three Ages: the Heroic, the Formative, the Golden Age, as has been outlined in His Writings. The Heroic Age closed with the Ascension of ‘Abdu’l-Bahá. The Formative Age is divided into epochs. The first epoch lasted 25 years… How long the Formative Age will last is not known, and there will probably be a number of epochs in it.

The Divine Plan of ‘Abdu’l-Bahá is divided into epochs. The first Seven-Year Plan constituted the first stage of the first epoch; the second Seven-Year Plan constitutes the second stage; while the Ten-Year Crusade will constitute the third stage of the first epoch of the Divine Plan. The first epoch of the Divine Plan will conclude with the conclusion of the Ten-Year Crusade. 
- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi, ‘Directives from the Guardian)