As you know, Baha'u'llah, the prophet-founder of the Baha'i Faith, returns in the spiritual fulfillment of the prophecies of the major world religions, including Christianity. The "Kingdom of God" that you have been awaiting has finally come! It is perhaps not as materially glorious or triumphant than you thought it would be (and indeed certain prophesies such as the ones given in Revelations were not fulfilled literally), but just look at the accounts of the prophets of the Old Testament and you will see that when a Promised One reveals Himself, the majority miss Him because they are veiled from His truth on account of the importance that they have attached to the literal interpretation of prophesies!
Recall the story of Noah, how everyone with the exception of his family rejected Him (at least according to the literal interpretation of the story). God could make the return of His messenger instantly obvious to everyone on the planet if He wanted to (or at least every believer), but has He ever worked that way? No. Indeed, your forefathers thought that their promised one's return would be so clear that all the believers would instantly recognize Him, but this was never the case. So the first step in recognizing Christ's return (if He did indeed return), is admitting that God does not constrain Himself to work in the ways that men think He should work, or will work, for He is exalted above our human limitations. He didn't make it obvious to our forefathers; how much better are we than them that He should treat us any differently?
The Baha'i Faith teaches that when a seeker is searching, he should drop all preconceived beliefs and, with an open heart, investigate the claims made by the world religions.
The following is a provisional translation of an exerpt of one of Baha'u'llah's writings revealed during His visit to the Garden of Ridván (22 April 1863), close to Baghdad. He was there for twelve days. Here He declared that He was God's Messenger for today, and stated His mission. During one of these twelve days, Baha'u'llah revealed the Words of Jesus Christ Himself, intended especially for Christians.
Here is the provisional translation of this Tablet (though I think the translation itself is well done and effective). Again I encourage Christians to, before reading it, empty from their minds any the thoughts that might keep them from recognizing Christ's Words, such as that Baha'u'llah is a "false Prophet." Only through an open mind/heart will the seeker be able to determine, with the soul, that these, indeed, are Christ's own Words (I have marked Christ's words in red):
- Nuzzila fi al-Yawm ir-Ridwán (Revealed on the Day of Ridwán).
This is the Day in which the Spirit [Jesus] proclaimeth from the zenith of heaven: “O Concourse of creation! Verily, the Sovereign of the world hath appeared and all that which was in the Kingdom of my Lord is fulfilled. Verily, the One Who was the beloved of my heart, the One who aided me in my Cause, hath come. Follow Him, and do not be of those who turn away. This is the Day in which all veils have been lifted and thy Lord, the Almighty, the Most Bountiful hath made His appearance. Because of His Advent, all that which I promised thee hath been perfected and fulfilled. Haste ye then to His resplendent, most luminous Beauty!...
“O Priests! Tell the servants that they should not ring the bells any longer except in His Name the Gracious, the most Transcendent. This is the Day in which every thirsty one hath attained unto the river of everlasting life, and every eager one can behold the Beauty of the All Merciful. In this Day, every humbled one can attain dignity and every poor one wealth. The ailing can obtain healing, the deaf can hear His melody, and the blind have obtained sight. Render thanks unto God and be not of those who join partners with Him. The kingdom of God circleth around Him and it is because of His Love that I adorned the cross with my body. Verily, I rose from the dead to complete my mention of His Name amongst men. O people of the Gospel! Do not make mention of Me (Jesus) when you have turned away from my Father, the All- Glorious. It is His love that transformed the fire to be a light for Abraham. He that tarrieth after Him is in manifest error. Haste ye, therefore, to the river of mercy, flowing from the presence of your Lord, the All-Merciful. Beware lest ye deprive yourself of this gushing river. Verily, We have trained you for this Day. Peruse ye my words so that ye may obtain what my intention was in making mention of Him. Truly, I did not come but for His cause and I did not appear but to give the glad tidings of the advent of the Kingdom of God.” Thus doth command you the Spirit, Who sacrificed His spirit to give life to the world and so that He may manifest what the sublime Purpose is. He, verily, hath appeared in truth. Follow Him then, and adhere not to what ye possess of the accounts of ancient times.