"Abraham, Moses, Zoroaster, Buddha, Jesus, Muḥammad, the Báb and Bahá’u’lláh are one in spirit and reality."

"This is a goodly temple and congregation, for—praise be to God!—this is a house of worship wherein conscientious opinion has free sway. Every religion and every religious aspiration may be freely voiced and expressed here. Just as in the world of politics there is need for free thought, likewise in the world of religion there should be the right of unrestricted individual belief. Consider what a vast difference exists between modern democracy and the old forms of despotism. Under an autocratic government the opinions of men are not free, and development is stifled, whereas in democracy, because thought and speech are not restricted, the greatest progress is witnessed. It is likewise true in the world of religion. When freedom of conscience, liberty of thought and right of speech prevail—that is to say, when every man according to his own idealization may give expression to his beliefs—development and growth are inevitable. Therefore, this is a blessed church because its pulpit is open to every religion, the ideals of which may be set forth with openness and freedom. For this reason I am most grateful to the reverend doctor; I find him indeed a servant of the oneness of humanity.

The holy Manifestations Who have been the Sources or Founders of the various religious systems were united and agreed in purpose and teaching. Abraham, Moses, Zoroaster, Buddha, Jesus, Muḥammad, the Báb and Bahá’u’lláh are one in spirit and reality. Moreover, each Prophet fulfilled the promise of the One Who came before Him and, likewise, Each announced the One Who would follow. Consider how Abraham foretold the coming of Moses, and Moses embodied the Abrahamic statement. Moses prophesied the Messianic cycle, and Christ fulfilled the law of Moses. It is evident, therefore, that the Holy Manifestations Who founded the religious systems are united and agreed; there is no differentiation possible in Their mission and teachings; all are reflectors of reality, and all are promulgators of the religion of God. The divine religion is reality, and reality is not multiple; it is one. Therefore, the foundations of the religious systems are one because all proceed from the indivisible reality; but the followers of these systems have disagreed; discord, strife and warfare have arisen among them, for they have forsaken the foundation and held to that which is but imitation and semblance. Inasmuch as imitations differ, enmity and dissension have resulted. For example, Jesus Christ—may my spirit be a sacrifice unto Him!—laid the foundation of eternal reality, but after His departure many sects and divisions appeared in Christianity. What was the cause of this? There is no doubt that they originated in dogmatic imitations, for the foundations of Christ were reality itself, in which no divergence exists. When imitations appeared, sects and denominations were formed." ...

`Abdu'l-Bahá, The Promulgation of Universal Peace, pp. 197-198


16 June 1912 
(excerpt from) Talk at Central Congregational Church 
Hancock Street, Brooklyn, New York