The Greatest Name

Concerning the Greatest Name; this term refers both to “Alláh-u-Abhá” and to “Yá Bahá’u’l-Abhá”. The first is the form of Bahá’í greeting and should be used, while the other is an invocation, meaning “O Thou Glory of Glories”. These two words are both referred to as the Greatest Name. 

- Shoghi Effendi  (From a letter dated 23 September 1936 written on behalf of Shoghi Effendi to NSA of Australia and New Zealand; “Messages to the Antipodes’)