The Scriptures reveal that both houses will be restored in the future:
"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" (Ez.37:21-22).
As I have already shown, the fathers of those who will receive the promise of the New Covenant are the physical descendants of Abraham, Isaac and Jacob so those who will receive that promises will also be the physical descendants of Abraham, Isaac and Jacob.
But you obviously refuse to believe what is written at Jeremiah 31:31-34 because you put more faith in what some men say about the Scriptures than you do in what the Scriptures themselves say. It is those who "believe God" who are saved (Ro.4:3) and believing what some men say about the Scriptures saves no one!