HUH? A Jew is someone BLOOD RELATED TO Abraham.
That may be true, but only through Isaac.
You're forgetting that Abraham had TWO sons, Ishmael and Isaac.
The descendants of Ishmael are NOT Jews, and if you try making that claim in front of Ishmael's descendants, they may actually kill you for it.
Abraham's son and grandson are BLOOD related to him.
You don't seem to be getting it.
Jews are related to Abraham, yes, but not all of Abraham's descendants are Jews. Ishmael was not a Jew. Neither was Isaac, for that matter... as the term "Jew" came about later.
You need to learn more Biblical history, because you are sorely lacking in that area.