`“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. “
“In Islám there is a tradition that among the many names of God, one was the greatest; however, the identity of this Greatest Name was hidden. Bahá’u’lláh has confirmed that the Greatest Name is “Bahá.”
The Greatest Name symbol is based on the Arabic root word of “Bahá” meaning Glory, splendor or light.