Baha’u’llah addressed Pope Pius IX in these words:
O Pope! Rend the veils asunder. He Who is the Lord of Lords is come overshadowed with clouds, and the decree hath been fulfilled by God, the Almighty, the Unrestrained. Dispel the mists through the power of thy Lord, and ascend unto the Kingdom of His names and attributes. Thus hath the Pen of the Most High commanded thee at the behest of thy Lord, the Almighty, the All-Compelling. He, verily, hath again come down from Heaven even as He came down from it the first time. Beware that thou dispute not with Him even as the Pharisees disputed with Him without a clear token or proof. On His right hand flow the living waters of grace, and on His left the choice Wine of justice, whilst before Him march the angels of Paradise, bearing the banners of His signs. Beware lest any name debar thee from God, the Creator of earth and heaven. Leave thou the world behind thee, and turn towards thy Lord, through Whom the whole earth hath been illumined.
We have adorned the Kingdom with the ornament of Our name, the All-Glorious.
(Baha’u’llah, The Summons of the Lord of Hosts)
Here, Baha’u’llah refers to Christ’s promise in Revelation 3:12 that He will return with a “new name.” In that verse, Jesus links His own new name to the City of God, the “New Jerusalem” that comes down out of heaven from God. In Revelation 21:10-11, John sees that Holy City, the New Jerusalem, coming down out of heaven from God, “having the glory of God.” “The Glory of God” is Baha’u’llah’s name–Baha’u’llah is Arabic for “The Glory of God” or “The Splendor of God.”