"Anyway, there's a purpose to all of the "begets", knowing how to identify the children of Adam's line. He was the father of all who live."
Well, now you're taking this to a different place, a bloodline of salvation, with those outside of that bloodline having no eternal life. I certainly hope that's not so.
All can gain salvation through Jesus Christ. His bloodline is a sign. We needed to maintain awareness of the lineage until His birth & it is why it became possible to spread the good news to gentiles after He was born.