INTRODUCTION
The number one biblical verse used by Zionist Jews and Zionist “Christians” alike to justify dispossessing the Palestinians of their land is this one:
“On that day the LORD made a covenant with Abram and said, ‘To your descendants I give this land, from the river of Egypt to the great river, the Euphrates….'” Genesis 15:18
By “descendants,” God definitely meant the same biological bloodline—the same DNA, actual grandchildren of Abram/Abraham—not spiritual progeny. As even a cursory study would show, those known today as Jews, or converted Jews, are not remotely bloodline descendants of Abraham.
If today’s converted Jews were truly descendants of the twelve tribes, they would be able to identify the specific tribe to which they belong. Scripture requires it. When Israel was numbered in the wilderness, the people were registered “by their families, by their fathers’ houses, according to the number of names” (Numbers 1:18)—each man knew his tribe. When the land was divided, Joshua sent men through the land to describe it, and the inheritance was apportioned by tribe and by clan (Joshua 18:4-10). Tribal identity was not a vague sentiment. It was a legal inheritance, a name, a portion of ground.
The two labels most commonly used today to describe “Jews” of today do not meet that standard—because they do not trace descent from Abraham at all. “Ashkenazim” derives from Ashkenaz, a descendant listed in the Table of Nations (Genesis 10:3; 1 Chronicles 1:6)—a figure who is not one of the twelve tribes and who is a descendant of Japheth, not Shem. “Sephardic” derives from Sepharad, a place mentioned in the Bible (Obadiah 1:20) and associated with ancient Persia, which likewise has no connection to the twelve tribes but to Japheth. These names identify geographic and ancestral lineages, not tribal membership within Israel. They tell us where a people lived and whom they descended from—but they do not tell us which tribe they belong to, because they are not tribal names at all.
https://biblicisminstitute.wordpress.com/2014/07/14/are-jews-the-israelites-of-the-bible/