Do you propose to have some demonstrable fact about my ethnicity simply because I'm a covenantalist Christian?

Do you propose to have some demonstrable fact about Jews not being descended from Judah (whether or not there was also intermarriage) and about being solely "dysgenic turkomongoloid"? The Bible says they were Ioudaios in the 1st century, by the 10th century Judaeus was shortened to Ju, there was never a point at which Ioudaioi/Jews ceased to exist with someone else picking up the name.