I almost forgot to add: we've studied the Dioscuri a lot here, so:

Egypt and Nubia, the Warring Twins?

http://www.trinicenter.com/Gilkes/2002/0801.htm

Their first two children, Cain and Abel, are the warring twins so prominent in the Kemetic Mysteries [Yusir/Set]. But more than that Cain/QAYIN [Heb], who strikes down and kills Abel, is identified with the Kemetic Set and the word QEN which means, "to strike down". Abel/HABL [Heb] is rendered in Egyptian as HAB-IR - "feast" or "rite"; we can see the parallel to Abel who offers a lamb to god in a ceremonial ritual. Note also that the Hebrew beliefs come at the time when the Kemetic Great Year's Age of the Ram which begins circa 2218 BCE.