We need some clarity regarding this subject. So Christians need to ask themselves some hard questions and obtain some honest answers.
1. Is the modern secular nation-state of Israel located in Palestine, and is Jerusalem its capital? Absolutely
2. Was Jerusalem the capital of ancient Israel? Absolutely.
3. Did at least a few Palestinian (Sephardic) Jews remain in Palestine after the Diaspora of the Jews? Absolutely.
4. Were there both Ashkenazic and Sephardic Jews in Europe and the USSR? Absolutely
5. Did both Ashkenazic and Sephardic Jews return to Israel after 1948? Absolutely
6. Are Jewish proselytes regarded as fully Jews by the Jews themselves? Absolutely.
7. Therefore are Ashkenazic Jews fully Jews for all practical purposes? Absolutely.
8. Will Christ return to Jerusalem at His second coming? Absolutely
9. Will God supernaturally gather all Jews worldwide and bring them to Israel after Christ's second coming? Absolutely.
The New Testament tells us that the majority of Jews were (and are) still in unbelief because they have been blinded to the truth about Christ. At the same time many Jews are presently turning to Yeshua ha Mashiach (Jesus the Christ) and becoming Messianic Jews (believers).
The Zionists from Europe who worked to establish the nation of Israel in the late 19th and early 20th century were also unbelieving Jews. But because of the persecution of Jews throughout Europe and the former USSR, they believed that Jews needed a homeland for themselves, and no one can argue with that. It is the same with the persecuted Kurds today, who should also have a homeland for themselves. No one should forget that both the Nazis and the Soviet Communists were trying to exterminate the Jews througout Europe and the USSR, and almost succeeded. No one should also forget that Anti-Semitism was rife throughout Europe and North America at the same time as Jews were being killed in death camps.
So while the nation of Israel is definitely not biblical Israel, it is still unbelieving Israel as far as God is concerned. But after the second coming of Christ, one third of all Jews worldwide will become the believing remnant of Israel and go into the Millennium. And God knows exactly who is in which tribe as we see in Ezekiel 48.
I'm not well-informed on any of that just yet - there seems to be a lot of history involved. I had read that the flag that Israel flies is not the star of David as many Christians erroneously believe and then Chuck Baldwin stated that the nation of Israel isn't biblical Israel. So I'm beginning to see that it's an illuminati/ Zionist creation - (I'm not sure if they're one and the same yet). I wonder why so many pastors are deceived about it - unless that's what Christian colleges have taught - and they have allegedly been infiltrated by the illuminati. I've read that Bob Jones University has been teaching false doctrine but I don't know of any others.