November 19

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… 
- ‘Abdu’l-Baha  (‘Tablets of ‘Abdu’l-Baha, vol. 1)