An important feature of the Hebrew social organization was their moiety structure. They were organized into two separate ritual groups (moieties), and it is clear from the biblical data that the moieties associated with one of the Hebrew ancestors more than the other.
The Sethite Hebrew associated with Seth who appears to have been a deified Nilotic ancestor, as is suggested by the discovery of Seth images at Nekhen on the Nile, the earliest known Hebrew site.
The two moieties helped each other but were often in competition. Descriptions of the Horites and Sethites are plentiful in ancient texts such as the Ancient Pyramid Texts (2400-2200 BC). These descriptions indicate that the Horites and the Sethites maintained separate settlements. Utterance 308 addresses them: "Hail to you, Horus in the Horite Mounds! Hail to you, Horus in the Sethite Mounds!"
The Hebrew married only members of their royal priest caste. Marriage between members of the moieties strengthened the Hebrew identity. and preserved the caste's wealth. For example, the lineages of Cain and Seth are linked by a pattern of recurrent marriage between the numerous Horite and Sethite clans.
The custom of sending away non-ascendant sons drove the Hebrew dispersion out of the Nile Valley well before the time of Abraham (c. 2000 BC).
Midrashim often employ the device of slavery to explain why a prominent Hebrew is not living in Judah, Israel, or the land of Canaan. It is used to explain why Joseph was in Egypt, why Daniel was in Babylon, and why Mordecai and Esther were in Persia. In the sixth century BC, many Judean noblemen were taken to Babylon, and Babylon was conquered by the Persians who took captives to Susa. These events have been historically verified. Midrash often embroiders historical events to convey a theological message.






