Their Reality:
His Holiness the Exalted One (the Bab) is the Manifestation of the unity and oneness of God and the Forerunner of the Ancient Beauty. His Holiness the Abha Beauty (Baha’u’llah) (may my life be a sacrifice for His steadfast friends) is the supreme Manifestation of God and the Day-Spring of His most divine Essence.
(`Abdu’l-Baha, quoted in Shoghi Effendi: World Order of Baha’u’llah, p. 133)

That Baha’u’llah should, notwithstanding the overwhelming intensity of His Revelation, be regarded as essentially one of these Manifestations of God, never to be identified with that invisible Reality, the Essence of Divinity itself, is one of the major beliefs of our Faith – a belief which should never be obscured and the integrity of which no one of its followers should allow to be compromised.
(Shoghi Effendi: World Order of Baha’u’llah, p. 114)

…in the person of its Forerunner, the Bab, every follower of Baha’u’llah recognizes not merely an inspired annunciator but a direct Manifestation of God.
(Shoghi Effendi: World Order of Baha’u’llah, p. 61)

Their Missions:
The Bab and Baha’u’llah over sixty years ago proclaimed the glad tidings of universal peace. The Bab was martyred in the Cause of God. Baha’u’llah suffered forty years as a prisoner and exile in order that the Kingdom of love might be established in the East and West. He has made it possible for us to meet here in love and unity. Because He suffered imprisonment, we are free to proclaim the oneness of the world of humanity for which He stood so long and faithfully. He was chained in dungeons, He was without food, His companions were thieves and criminals, He was subjected to every kind of abuse and infliction, but throughout it all He never ceased to proclaim the reality of the Word of God and the oneness of humanity.
(`Abdu’l-Baha: Promulgation of Universal Peace, pp. 6-7)

These two Blessed Souls [Baha’u’llah and the Bab] devoted Their lives to the foundation of international peace and love among mankind. They strove with heart and soul to establish the teachings by which divergent people might be brought together and no strife, rancor or hatred prevail. Baha’u’llah, addressing all humanity, said that Adam, the parent of mankind, may be likened to the tree of nativity upon which you are the leaves and blossoms. Inasmuch as your origin was one, you must now be united and agreed; you must consort with each other in joy and fragrance. He pronounced prejudice – whether religious, racial, patriotic, political – the destroyer of the body politic. He said that man must recognize the oneness of humanity, for all in origin belong to the same household, and all are servants of the same God. Therefore, mankind must continue in the state of fellowship and love, emulating the institutions of God and turning away from satanic promptings, for the divine bestowals bring forth unity and agreement, whereas satanic leadings induce hatred and war.
This remarkable Personage was able by these principles to establish a bond of unity among the differing sects and divergent people of Persia. Those who followed His teachings, no matter from what denomination or faction they came, were conjoined by the ties of love, until now they cooperate and live together in peace and agreement. They are real brothers and sisters. No distinctions of class are observed among them, and complete harmony prevails. Daily this bond of affinity is strengthening, and their spiritual fellowship continually develops. In order to ensure the progress of mankind and to establish these principles Baha’u’llah suffered every ordeal and difficulty. The Bab became a martyr, and over twenty thousand men and women sacrificed their lives for their faith. Baha’u’llah was imprisoned and subjected to severe persecutions. Finally, He was exiled from Persia to Mesopotamia; from Baghdad He was sent to Constantinople and Adrianople and from thence to the prison of Akka in Syria. Through all these ordeals He strove day and night to proclaim the oneness of humanity and promulgate the message of universal peace. From the prison of Akka He addressed the kings and rulers of the earth in lengthy letters, summoning them to international agreement and explicitly stating that the standard of the Most Great Peace would surely be upraised in the world.
(`Abdu’l-Baha: Promulgation of Universal Peace, pp. 124-125)

For each and every people, and every religion, await a Promised One, and Baha’u’llah is that One Who is awaited by all; and therefore the Cause of Baha’u’llah will bring about the oneness of mankind, and the tabernacle of unity will be upraised on the heights of the world, and the banners of the universality of all humankind will be unfurled on the peaks of the earth.
(`Abdu’l-Baha: Selections … `Abdu’l-Baha, p. 101)

Fulfillment of Prophecy:
The Bab announced that the greater Manifestation would take place after Him and called the Promised One “Him Whom God shall make manifest,” saying that nine years later the reality of His own mission would become apparent.
(`Abdu’l-Baha: Promulgation of Universal Peace, p. 26)

Concerning the uniqueness of Baha’u’llah’s station and the greatness of His Revelation, Shoghi Effendi affirms that the prophetic statements concerning the “Day of God”, found in the Sacred Scriptures of past Dispensations, are fulfilled by the advent of Baha’u’llah:
To Israel He was neither more nor less than the
incarnation of the “Everlasting Father”, the “Lord of
Hosts” come down “with ten thousands of saints”; to
Christendom Christ returned “in the glory of the Father”;
to Shi’ah Islam the return of the Imam Husayn; to Sunni
Islam the descent of the “Spirit of God” (Jesus Christ); to
the Zoroastrians the promised Shah-Bahram; to the
Hindus the reincarnation of Krishna; to the Buddhists
the fifth Buddha.
(The Universal House of Justice: Aqdas: Notes, p. 234)

The Life of the Bab:
As for the Bab – may my soul be His sacrifice! – at a youthful age, that is to say, when He had reached the twenty-fifth year of His blessed life, He stood forth to proclaim His Cause.(1) It was universally admitted by the Shi’is that He had never studied in any school and had not acquired knowledge from any teacher; all the people of Shiraz bear witness to this. Nevertheless, He suddenly appeared before the people, endowed with the most complete erudition. Although He was but a merchant, He confounded all the ulama of Persia.(2) All alone, in a way which is beyond imagination, He upheld the Cause among the Persians, who are renowned for their religious fanaticism. This illustrious Soul arose with such power that He shook the supports of the religion, of the morals, the conditions, the habits and the customs of Persia, and instituted new rules, new laws and a new religion. Though the great personages of the State, nearly all the clergy, and the public men arose to destroy and annihilate Him, He alone withstood them and moved the whole of Persia.
Many ulama and public men, as well as other people, joyfully sacrificed their lives in His Cause, and hastened to the plain of martyrdom.
The government, the nation, the doctors of divinity and the great personages desired to extinguish His light, but they could not do so. At last His moon arose, His star shone forth, His foundations became firmly established, and His dawning-place became brilliant. He imparted divine education to an unenlightened multitude and produced marvelous results on the thoughts, morals, customs and conditions of the Persians. He announced the glad tidings of the manifestation of the Sun of Baha to His followers and prepared them to believe.
The appearance of such wonderful signs and great results; the effects produced upon the minds of the people, and upon the prevailing ideas; the establishment of the foundations of progress; and the organization of the principles of success and prosperity by a young merchant, constitute the greatest proof that He was a perfect Educator. A just person will never hesitate to believe this.
(`Abdu’l-Baha: Some Answered Questions, pp. 25-26)

The Life and Teachings of Baha’u’llah:
At a time when the Orient was rent by religious dissension Baha’u’llah appeared. He founded teachings which became the means of uniting the various and divergent peoples. He promulgated principles which removed the cause of their dissension, until today in Persia those who had been constantly at war are united. Christians, Muslims, Zoroastrians, Jews – people of every belief and denomination who have followed the teachings of Baha’u’llah – have attained complete fellowship and spiritual agreement. Former differences and dissensions have passed away entirely. Some of the principles of Baha’u’llah’s teaching are as follows:
First, that the oneness of humanity shall be recognized and established. All men are the servants of God. He has created all; He is the Provider and Preserver; He is loving to all. Inasmuch as He is just and kind, why should we be unjust toward each other? As God has quickened us with life, why should we be the cause of death? As He has comforted us, why should we be the cause of anxiety and suffering? Can humanity conceive a plan and policy better and superior to that of God? It is certain that no matter how capable man may be in origination of plan and organization of purpose, his efforts will be inadequate when compared with the divine plan and purpose; for the policy of God is perfect. Therefore, we must follow the will and plan of God. As He is kind to all, we must be likewise; and it is certain that this will be most acceptable to God.
Second, that truth or reality must be investigated; for reality is one, and by investigating it all will find love and unity. Those who are ignorant must be educated, the ailing must be healed, the undeveloped must be brought to maturity. Shall we reject or oppose the ignorant, sick or immature because of their incapacity? Is it not better to be kind and gentle and to provide the means of remedy? Therefore, under no circumstances whatsoever should we assume any attitude except that of gentleness and humility.
Third, that religion is in harmony with science. The fundamental principles of the Prophets are scientific, but the forms and imitations which have appeared are opposed to science. If religion does not agree with science, it is superstition and ignorance; for God has endowed man with reason in order that he may perceive reality. The foundations of religion are reasonable. God has created us with intelligence to perceive them. If they are opposed to science and reason, how could they be believed and followed?
Fourth, that religion must be conducive to love and unity among mankind; for if it be the cause of enmity and strife, the absence of religion is preferable. When Moses appeared, the tribes of Israel were in a state of disunion as captives of the Pharaohs. Moses gathered them together, and the divine law established fellowship among them. They became as one people, united, consolidated, after which they were rescued from bondage. They passed into the promised land, advanced in all degrees, developed sciences and arts, progressed in material affairs, increased in divine or spiritual civilization until their nation rose to its zenith in the sovereignty of Solomon. It is evident, therefore, that religion is the cause of unity, fellowship and progress among mankind. The function of a shepherd is to gather the sheep together and not to scatter them. Then Christ appeared. He united varying and divergent creeds and warring people of His time. He brought together Greeks and Romans, reconciled Egyptians and Assyrians, Chaldeans and Phoenicians. Christ established unity and agreement among people of these hostile and warring nations. Therefore, it is again evident that the purpose of religion is peace and concord. Likewise, Muhammad appeared at a time when the peoples and tribes of Arabia were divergent and in a state of continual warfare. They killed each other, pillaged and took captive wives and children. Muhammad united these fierce tribes, established a foundation of fellowship among them so that they gave up warring against each other absolutely and established communities. The result was that the Arabian tribes freed themselves from the Persian yoke and Roman control, established an independent sovereignty which rose to a high degree of civilization, advanced in sciences and arts, extended the Saracen dominion as far west as Spain and Andalusia and became famous throughout the world. Therefore, it is proved once more that the religion of God is intended to be the cause of advancement and solidarity and not of enmity and dissolution. If it becomes the cause of hatred and strife, its absence is preferable. Its purpose is unity, and its foundations are one.
When Baha’u’llah appeared in Persia, violent strife and hatred separated the peoples and tribes of that country. They would not come together for any purpose except war; they would not partake of the same food, or drink of the same water; association and intercourse were impossible. Baha’u’llah founded the oneness of humanity among these people and bound their hearts together with such ties of love that they were completely united. He reestablished the prophetic foundations, reformed and renewed the principles laid down by the Messengers of God who had preceded Him. And now it is hoped that through His life and teachings the East and West shall become so united that no trace of enmity, strife and discord shall remain.
(`Abdu’l-Baha: Promulgation of Universal Peace, pp. 127-129)

Baha’u’llah is the real Physician. He has diagnosed human conditions and indicated the necessary treatment. The essential principles of His healing remedies are the knowledge and love of God, severance from all else save God, turning our faces in sincerity toward the Kingdom of God, implicit faith, firmness and fidelity, loving-kindness toward all creatures and the acquisition of the divine virtues indicated for the human world. These are the fundamental principles of progress, civilization, international peace and the unity of mankind. These are the essentials of Baha’u’llah’s teachings, the secret of everlasting health, the remedy and healing for man.
(`Abdu’l-Baha: Promulgation of Universal Peace, p. 205)

In the European histories, no doubt, you have read detailed accounts of the morals, customs and ideas of the Persians during the last centuries. It is useless to repeat them. Briefly, we will say that Persia had fallen so low that to all foreign travelers it was a matter of regret that this country, which in former times had been so glorious and highly civilized, had now become so decayed, ruined and upset, and that its population had lost its dignity.
It was at this time that Baha’u’llah appeared. His father was one of the viziers, not one of the ulama. As all the people of Persia know, He had never studied in any school, nor had He associated with the ulama or the men of learning. The early part of His life was passed in the greatest happiness. His companions and associates were Persians of the highest rank, but not learned men.
As soon as the Bab became manifested, Baha’u’llah said, “This great Man is the Lord of the righteous, and faith in Him is incumbent upon all.” And He arose to assist the Bab and gave many proofs and positive evidences of His truth, in spite of the fact that the ulama of the state religion had constrained the Persian government to oppose and resist Him and had further issued decrees ordering the massacre, pillage, persecution and expulsion of His followers. In all the provinces they began to kill, to burn, to pillage the converts and even to assault the women and children. Regardless of this, Baha’u’llah arose to proclaim the word of the Bab with the greatest firmness and energy. Not for one moment was He in concealment; He mixed openly with His enemies. He was occupied in showing forth evidences and proofs and was recognized as the Herald of the Word of God. In many changes and chances He endured the greatest misfortunes, and at every moment He ran the risk of being martyred.
He was put into chains and confined in an underground prison. His vast property and inheritance were pillaged and confiscated. He was exiled four times from land to land and found rest only in the “Greatest Prison.”(3)
In spite of all this He never ceased for one instant His proclamation of the greatness of the Cause of God. He manifested such virtue, knowledge and perfections that He became a wonder to all the people of Persia. So much so that in Tihran, Baghdad, Constantinople, Rumelia, and even in Akka, every one of the learned and scientific men who entered His presence, whether friend or enemy, never failed to receive the most sufficient and convincing answer to whatever question was propounded. All frequently acknowledged that He was alone and unique in all perfections.
(`Abdu’l-Baha: Some Answered Questions, pp. 27-28)

During His lifetime He was intensely active. His energy was unlimited. Scarcely one night was passed in restful sleep. He bore these ordeals, suffered these calamities and difficulties in order that a manifestation of selflessness and service might become apparent in the world of humanity; that the Most Great Peace should become a reality; that human souls might appear as the angels of heaven; that heavenly miracles would be wrought among men; that human faith should be strengthened and perfected; that the precious, priceless bestowal of God – the human mind – might be developed to its fullest capacity in the temple of the body; and that man might become the reflection and likeness of God, even as it hath been revealed in the Bible, “Let us make man in our image.”
(`Abdu’l-Baha: Promulgation of Universal Peace, p. 28)

Mirza Husayn-‘Ali, surnamed Baha’u’llah (the Glory of God), a native of Mazindaran, Whose advent the Bab [Herald and Forerunner of Baha’u’llah] had foretold, … was imprisoned in Tihran, was banished, in 1852, from His native land to Baghdad, and thence to Constantinople and Adrianople, and finally to the prison city of Akka, where He remained incarcerated for no less than twenty-four years, and in whose neighborhood He passed away in 1892. In the course of His banishment, and particularly in Adrianople and Akka, He formulated the laws and ordinances of His Dispensation, expounded, in over a hundred volumes, the principles of His Faith, proclaimed His Message to the kings and rulers of both the East and the West, both Christian and Muslim, addressed the Pope, the Caliph of Islam, the Chief Magistrates of the Republics of the American continent, the entire Christian sacerdotal order, the leaders of Shi’ih and Sunni Islam, and the high priests of the Zoroastrian religion. In these writings He proclaimed His Revelation, summoned those whom He addressed to heed His call and espouse His Faith, warned them of the consequences of their refusal, and denounced, in some cases, their arrogance and tyranny….
(Shoghi Effendi: The Promised Day is Come, p. vi)

Future Prophets Under Baha’u’llah’s Shadow:
After Baha’u’llah many Prophets will, no doubt, appear but they will be under His Shadow. Although they may abrogate the laws of this Dispensation in accordance with the needs and requirements of the age in which they appear, they nevertheless draw their spiritual force from this mighty Revelation.
(Shoghi Effendi: Directives of the Guardian, p. 61)

1. The Bab is here designated by His title Hadrat-i-Ala, His Supreme Highness; but for the convenience of the reader we shall continue to designate Him by the name under which He is known throughout Europe–i.e., the Bab.
2. Doctors of the religion of Islam.
3. Exiled first to Baghdad, then to Constantinople, then to Adrianople, He was imprisoned in Akka (Acre), “the Greatest Prison,” in 1868.