August 29

The Greatest Name is the Name of Bahá’u’lláh. “Yá Bahá’u’l-Abhá” is an invocation meaning: “O Thou Glory of Glories”! “Alláh-u-Abhá” is a greeting which means: “God the All-Glorious”. Both refer to Bahá’u’lláh. By Greatest Name is meant that Bahá’u’lláh has appeared in God’s Greatest Name, in other words, that He is the Supreme Manifestation of God. 
- Shoghi Effendi  (From a letter dated 26 December, 1941, written on behalf of Shoghi Effendi to an individual believer; ‘Letters from the Guardian to Australia and New Zealand’)