I would say it goes both ways. Remember, it was the Jews who first persecuted the believers, their fellow brethren. It still lingers today with the ADL’s attempt to dominate the Goyim who avow “Christ is King.” To this day, Jews disown their own family members who avow Christ.
As I said, the northern tribes mixed with the Gentiles to become Christians with more regularity than the Jews. Christ is the cause of the enmity between the two kingdoms.
And the LORD said unto me, Cast it unto the potter: a goodly price that I was prised at of them. And I took the thirty pieces of silver, and cast them to the potter in the house of the LORD. Then I cut asunder mine other staff, even Bands, that I might break the brotherhood between Judah and Israel. (Zechariah 11:13-14)
I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy. (Romans 11:11)
Matthew 27:1-10 maintains Zechariah prophesied the first advent. The jealousy persists until Christ returns.
Say unto them, Thus saith the Lord GOD; Behold, I will take the stick of Joseph, which is in the hand of Ephraim, and the tribes of Israel his fellows, and will put them with him, even with the stick of Judah, and make them one stick, and they shall be one in mine hand… And say unto them, Thus saith the Lord GOD; Behold, I will take the children of Israel from among the heathen, whither they be gone, and will gather them on every side, and bring them into their own land: And I will make them one nation in the land upon the mountains of Israel; and one king shall be king to them all: and they shall be no more two nations, neither shall they be divided into two kingdoms any more at all. (Ezekiel 37:19, 21-22)
The body of Christ commences the joining of the two kingdoms, which is consummated when Christ returns. In essence, all Israel shall be saved (Romans 11:26); it is finished when Christ returns; it doesn’t begin as dispensationalists believe.
God did not replace his people as Supersessionists believe, and neither did he stop feeding them as dispensationalists hold. Everything is fulfilled exactly as the prophets predicted.