November 24

In accordance with the explicit text of the Kitáb-i-Aqdas Bahá'u'lláh hath made the Center of the Covenant the Interpreter of His Word - a Covenant so firm and mighty that from the beginning of time until the present day no religious Dispensation hath produced its like. 
- 'Abdu'l-Bahá  (Cited by Shoghi Effendi in "The World Order of Bahá'u'lláh - Selected Letters The Compilation of Compilations, vol. I, The Covenant)