'Obal,' as in Genesis 10:28, signifies a ritual of the church called Eber.

(Referenties: Arcana Coelestia 1245)

1245. Verses 26-29 And Joktan begot Almodad, and Sheleph, and Hazarmaveth, and Jerah, and Hadoram, and Uzal, and Diklah, and Obal, and Abimael, and Sheba, and Ophir, and Havilah, and Jobab. All of these are the sons of Joktan.

These were just so many nations consisting of the families of Eber, which mean just so many types of ritual forms.