Descendants of the tribe of Judah? Converts such as the Khazar/Ashkenazi? And who are the Synagogue of Satan who say they are Jews, but are not?
So God anticipated our modern-day dilemma and gave us the answer we need:
For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh: But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
To the church's great failure, this truth is completely ignored.