Some of them originate in Palestine, where they lived before Europe created “Israel”. Some of them originated from other states in west Asia or east Africa, or the Americas where they have the means and opportunity to freely return. Some of them were born in occupied Palestine, where they have every right to stay and live as equals when Palestine is liberated from colonization.

Those weren’t the people that created the state of “Israel”. They didn’t drive the rest of the population out of their homes, and none of those people will stop existing when the occupying state is destroyed. Neither will any other Jewish people living across the world calling for peace, no matter how much you’d prefer to erase them and see them expelled from your country. They survived Europe’s past attempts to expel and exterminate them, and they’ll certainly survive the end of Euro-American colonialism in Palestine.

According to Israel's Central Bureau of Statistics, in 2008, of Israel's 7.3 million people, 75.6 percent were Jews of any background.[39] Among them, 70.3 percent were Sabras (born in Israel), mostly second- or third-generation Israelis, and the rest are olim (Jewish immigrants to Israel)—20.5 percent from Europe and the Americas, and 9.2 percent from Asia and Africa, including the Arab countries.

https://en.m.wikipedia.org/wiki/Israeli_Jews