In the Word of God there is still another unity, the oneness of the Manifestations of God, His Holiness Abraham, Moses, Jesus Christ, Muhammad, the Báb and Bahá'u'lláh. This is a unity divine, heavenly, radiant, merciful; the one reality appearing in its successive manifestations. For instance, the sun is one and the same but its points of dawning are various. During the summer season it rises from the northern point of the ecliptic; in winter it appears from the southern point of rising. Each month between it appears from a certain zodiacal position. Although these dawning-points are different, the sun is the same sun which has appeared from them all. The significance is the reality of prophethood which is symbolized by the sun, and the holy Manifestations are the dawning-places or zodiacal points.
- 'Abdu'l-Baha ('Baha'i World Faith')
Each religion teaches that a mediator is necessary between man and the Creator -- one who receives the full light of the divine splendor and radiates it over the human world, as the earth's atmosphere receives and diffuses the warmth of the sun's rays. This mediator between God and humanity has different designations though he always brings the same spiritual command.
In one era he is called Abraham, at another time Moses, again he is called Buddha, another time Jesus, and yet another time Mohammad. All turned to the divine reality for their strength. Those who followed Moses accepted him as their mediator; those who followed Zoroaster accepted him as their mediator; but all the Israelites deny Zoroaster, and the Zoroastrians deny Moses. They fail to see in both the one light. Had the Zoroastrians comprehended the reality of Zoroaster, they would have understood Moses and Jesus. Alas! the majority of men attach themselves 33 to the name of the mediator and lose sight of the real purport.
- 'Abdu'l-Baha ('Divine Philosophy')
Should you speak to a Jew about the medium or channel between God and man, without referring to any particular name or person, he would say, "Yes, this is right, but I say the name of this mediator is Moses." If you give the exposition of the divine philosophy to the followers of each religion they will agree with you in the abstract, but they will stick to the names of their own prophets and arise in contention and strife over these names. The Jew believes in Christ, though he knows it not, and is quibbling over the mere name.
- 'Abdu'l-Baha ('Divine Philosophy')
You have asked me two questions: “That if the same spirit is manifest in all the Manifestations and Prophets, then what is the distinction or difference between Christ (or rather Jesus) and the other Prophets; also [what is the difference] between Father and Son?”
Know that the human spirit is one, but it manifests itself in various members of the body in a certain (measure or) form. The human spirit is existent in the sight (eyes); it is also existent in the brain, which is the location of great functions and powers; it is also existent in the heart, which organ is largely connected with the brain or the center of the mind, and the heart, or that center which is connection with the brain, has a distinct and separate function, effect and appearance. In this connection, the hair and nails have no command (nor direct feeling).
Figuratively speaking, the Father is the center of the brain and the Son is the center of the heart; the rest of the Prophets are members and parts. Fatherhood and Prophethood, in this case, are two expressions of the same thing, as man and creature are two names of the same reality. The word “man,” however, is greater than the word “creature” because it bears a weightier meaning than the name “creature”; both are the same.
- 'Abdu'l-Baha ('Tablets of Abdu'l-Baha vol. 1)