82:5.4

Superior groups, when isolated, always reverted to consanguineous mating. The Nodites for over one hundred and fifty thousand years were one of the great in-marriage groups. The later-day in-marriage mores were tremendously influenced by the traditions of the violet race, in which, at first, matings were, perforce, between brother and sister. And brother and sister marriages were common in early Egypt, Syria, Mesopotamia, and throughout the lands once occupied by the Andites. The Egyptians long practiced brother and sister marriages in an effort to keep the royal blood pure, a custom which persisted even longer in Persia. Among the Mesopotamians, before the days of Abraham, cousin marriages were obligatory; cousins had prior marriage rights to cousins. Abraham himself married his half sister, but such unions were not allowed under the later mores of the Jews.