Adam and Eve were not descendants of Abraham and Sarah.
No...Abraham and Sarah were descendants of Adam and Eve. The point being made was that Abraham and Sarah got their genetics from Adam and Eve, so as such, we should all be genetically related in some fashion to the Jews. Now I think the poster is a bit confused in that God chose a certain lineage of people brought forth from Abraham and Sarah’s genetics through which he would send our Messiah which was to be distinct from all other lineages of the gentiles. In that sense gentiles would not be related to the Hebrews and then the Jews left over from the 10 lost tribes until such time the Holy Spirit would make of gentile Christians “sons of Abraham by the spirit of adoption”.
Well, I know that! Abraham and Sarah were descendants of Adam and Eve. Aren’t we all descendants of Adam and Eve?