[boatbums]

How many times does someone have to explain to you that the Gentiles are NOT the House of Israel??? This, I think, is the source of your confusion. God isn't done with the Jewish people yet. Christians are the Bride of Christ. The House of Israel is currently the divorced wife of Jehovah/Yahweh who in the end times He promised to take back again. From The Wife of Jehovah and the Bride of Messiah:

The Jewish prophets did not leave things hopeless. They spoke of a coming day when Israel will again become the restored Wife of Jehovah. This will require a brand-new marriage contract, which is found in Jeremiah 31:31-34. What is often known as the new covenant is in many respects a new marriage contract that God will make with both the houses of Israel and Judah. This new covenant of marriage will be necessary because the old marriage covenant was broken. This remarriage contract is also described in Ezekiel 16:60-63. According to Ezekiel, God will enter into an everlasting covenant with Israel in the future.

The restoration of Israel as Jehovah's Wife is also described in Isaiah 54:1-8, and the remarriage is further described in Isaiah 62:4-5. Hosea, who had much to say about the adulteries of Israel, also spoke of Israel's reunion with her husband. Hosea 2:14-23 describes the courtship and the wooing in the wilderness and shows the four results of this reunion.

[Cronos]

Many of the House of Israel became Christians.
Christianity itself is a sect of 2nd temple Judaism.

What we call Judaism today is a sister sect of Christianity. The proper term is rabbinical Judaism which has the Talmud and Halacha in lieu of the New testament.

There is no more Jew nor Greek.

[Cronos]

Jeremiah, Ezekiel, Hossa wrote of the return from Babylon and that restoration.

The 2nd temple was built after those prophets prophesied.

Btw the 2nd temple was completed by an Edomite