Have you 30+post per bread retards ever studied any of the stuff you spend your lives blathering about, here?
There are, within the orthodox biblical canon, only two blood lines from adam. Cain and Set(h). Seth was the third child by adam and eve.
The entire old testament is effectively a tracing of both blood line and prophecy to establish Jesus as being descended from Cain (as effectively all are) and being the fulfillment of prophecy. There is a reason why Jesus (the Shepherd) makes reference to the kingdom of god being like that of a garden or farm and his own role being that of a shepherd. Cain was the farmer. Abel was the shepherd.
More revealing questions arise when one asks what it was abel sacrificed to gain the favor of adam's god, and who, exactly, Cain took as wives when wandering the land of Nod - that is, East of Eden?
If the first humans were adam and eve, then where did the people who Cain took as wives come from, and over what was Abel a shepherd?
Keep in mind, all of this overlaps quite intriguingly with the myths of Egypt, with Osiris and Set battling for favor to be the ruler of egypt. Set was the farmer and patron god of the desert nomads/immigrants to lower egypt while Osiris was the patron god of upper egypt and the aristocracy. Set killed Osiris amid the competitions for inheriting their father's seat, and then Isis had a conniption fit to knock herself up by a bit of necrophilia. Which is where we get horus.
Similar shenanigans appear in babylonian myth.
Clearly, something happened and people had their ideas about exactly who was in the right or wrong.
I'm sure there may be some nutjobs willing to justify their particular strain of genocide with ancient legends they proclaim to know the truth of - but most of the biblical line of note is descended from Cain and if you take the dogmatic approach, we all are. And cain trying to eliminate the blood line of adam makes no sense as he is one.