In
Ezra 2:59-62
We are shown genealogy. We are explicitly shown “the children of the children of Barzillai; which took a wife of the daughters of Barzillai the Gileadite, and was called after their name: These sought their register among those that were reckoned by genealogy, but they were not found: therefore were they, as polluted, put from the priesthood.” Now if we were dealing with being biologically correct, these offspring of the daughter of David’s favorite gentile would be legitimate as Levites. Yet, the Bible declares these “biological” Levites as corrupt. Genealogy meant everything to the ancient Israeli and Judean. We are showed Jesus’ genealogy to show He is of the root of Jesse. Therefore we who are students of the Bible must follow this rule when defining the a Judean according to the flesh. As you pointed out you are a mix of many different lineages and races. Now, if your ancestor was a Judean of the tribe of Judah, and this ancestor was born over 2,000 years ago. His or her descendent would have gone through many pairs of parents. Too many to count. By the time we come to 2024, there original DNA blueprint would be gone.
The problem is real, and a Jew according to the flesh is missing from your eschatology. Still I would like you to prove who is a Jew according to the flesh now?