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’)