Yes, Baha'u'llah claimed to be the promised one, and He has a revelation from God:
"VERILY I say, this is the Day in which mankind can behold the Face, and hear the Voice, of the Promised One. The Call of God hath been raised, and the light of His countenance hath been lifted up upon men. It behoveth every man to blot out the trace of every idle word from the tablet of his heart, and to gaze, with an open and unbiased mind, on the signs of His Revelation, the proofs of His Mission, and the tokens of His glory. " - Proclamation of Baha'u'llah
"This is a Tablet from this Servant, who is called [FONT=Times Ext Roman,Times Ext Roman]Ḥ[/FONT]usayn in the kingdom of names, to the concourse of the kings of the earth. Haply they may approach it in a spirit of open-mindedness, discover from its message the mysteries of divine providence, and be of those that comprehend its meaning, and perchance they may forsake all they possess, turn towards the retreats of holiness, and draw nigh unto God, the All-Glorious, the Incomparable.
O kings of the earth! Give ear unto the Voice of God, calling from this sublime, this fruit-laden Tree, that hath sprung out of the Crimson Hill, upon the holy Plain, intoning the words: There is none other God but He, the Mighty, the All-Powerful, the All-Wise. This is a Spot which hath been sanctified by God for those who approach it, a Spot wherein His Voice may be heard from the celestial Tree of Holiness. Fear God, O concourse of kings, and suffer not yourselves to be deprived of this most sublime grace. Fling away, then, the things ye possess, and take fast hold on the Handle of God, the Exalted, the Great. Set your hearts towards the Face of God, and abandon that which your desires have bidden you to follow, and be not of those who perish. " Suriy-i-Muluk, Baha'u'llah
"Thus have the verses of God been revealed, and thus hath it been decreed by the Lord of all names and attributes. Thy Lord, verily, is the True One, the Knower of things unseen. Nothing whatsoever shall prevent these tongues from magnifying their Creator. "
- Súrih of the Temple, Baha'u'llah
"Say: Alas for you! How can ye profess yourselves believers, when ye deny the verses of God, the Almighty, the All-Wise? Say: O people! Turn your faces unto your Lord, the All-Merciful. Beware lest ye be veiled by aught that hath been revealed in the Bayán: It was, in truth, revealed for no other purpose than to make mention of Me, the All-Powerful, the Most High, and had no other object than My Beauty. The whole world hath been filled with My testimony, if ye be of them that judge with fairness. "
- Súrih of the Temple, Baha'u'llah
"Say: O concourse of Christians! We have, on a previous occasion, revealed Ourself unto you, and ye recognized Me not. This is yet another occasion vouchsafed unto you. This is the Day of God; turn ye unto Him. He, verily, hath come down from heaven even as He came down the first time, and He desireth to shelter you beneath the shade of His mercy. He, verily, is the Exalted, the Mighty, the Supreme Helper. The Beloved One loveth not that ye be consumed with the fire of your desires. Were ye to be shut out as by a veil from Him, this would be for no other reason than your own waywardness and ignorance. Ye make mention of Me, and know Me not. Ye call upon Me, and are heedless of My Revelation, notwithstanding that I came unto you from the heaven of pre-existence with surpassing glory. Rend the veils asunder in My name and through the power of My sovereignty that ye may discover a path unto your Lord. "
- Súrih of the Temple, Baha'u'llah
