Biblically, Waybread is part of the Jewish nation.
Christians will also be part of that nation in the kingdom of God and the Christ according to the promises of the prophets and the apostles.
However, not all who call themselves Jews, nor all who call themselves Christians will be there, but only the one righteous remnant who are true children of Abraham. I leave this discrimination to God.
My half-sister converted to Judaism and is a member of the Reform branch, but she mentioned on her DNA test to have 8% Jewish from both parents (our Dad is from France and he was told of possible Jewish ancestry, but he's raised a Roman Catholic). She had an interest in Judaism in her young adult years and in her 30s (in the 2000s), her friends who were Jewish assisted her to learn about Judaism and make a complete conversion to her new religion over time.
Christians, Jews and Muslims all view Jerusalem and Israel as their holiest site (or Muslims, Mecca is more sacred) and these 3 different religions are linked to the Abrahamic or Monotheist idea of one god. Jews and Arabs (according to the Quran) are both descendants of Abraham: His wife Sarah had his son Isaac to forefather the Hebrews, while his concubine Hagar had his son Ishmael but was not given the promised land and they became wandering Bedouin Arab tribes.
The modern state of Israel has a Jewish majority, whether religiously, ethnic or cultural. About half of the Israeli population (esp. Jewish) are secular including atheist and humanist. About 20-25% of Israel has Arab roots, both Christian and Muslim (the majority) as well who may be Jewish but culturally are Arabs. And there are a sizable non-Jewish/Muslim minority, esp. from the former USSR and Slavic countries, other Europeans, East Asians, Indians, Africans and Latin Americans. There are Greeks, Armenians, Persians, Turks, Kurds, Samaritans, Druze, Assyrians, Circassians, Copts, Maronites, Chechens and Azeri who live in Israel.
There are 200,000 US citizens mostly Jewish (dual citizenship), but this list includes a few Evangelical Protestants of the Christian faith who believe Israel is where the second coming of Christ will happen. Israel allows Aliyah or the right of return to anyone who has a Jewish parent or grandparent and religiously in Judaism, then the number of guest workers who aren't Jewish indicates Israel has a huge preference for Jewish people from around the world, but they aren't exclusive in receiving immigrants. Despite the growing population of Orthodox and Hasidic Jews, the majority of Israelis have a western cultural liberal bent.