I am missing the problem or just not catching what you are in his post, maybe he will clarify.
Study the Book of Hosea. God specifically gave the Book of Hosea to and about the ten northern tribes of the
"house of Israel". It was not originally given to Gentiles. It wasn't given to Jews of the
"house of Judah" either, even though it does talk about them some.
At that time of Hosea the prophet, God had already split old Israel into 2 separate kingdoms (see 1 Kings 11 forward). The "house of Judah" represented the Jews of the tribes of Judah, Benjamin, and Levi at Jerusalem-Judea. But the rest of the tribes, ten, dwelt in the northern holy lands and made up their own "kingdom of Israel" or "house of Israel", and that is who God is speaking to in the Hosea prophecy.
In the Book of Hosea, God is telling the northern ten tribe kingdom that soon they will no longer be a kingdom, and that He is going to scatter them. At the same time, He said that will not happen to the "house of Judah", the southern kingdom. And thus the "kingdom of Judah" remained in the southern land while the ten northern tribes were literally removed, captive to Assyria and the lands of the Medes. The ten tribes thus became 'lost', scattered among the Gentiles, losing their heritage as Israel as God said would happen through His prophet Hosea.
God began the Hosea prophecy with telling Hosea to take a wife of a harlot, and name his children to represent how the ten tribe "house of Israel" had rebelled against Him.
But in final, God said He would no longer call the ten tribes by those names, and the time would come when they would no longer call Him Baali, but Ishi (Friend). And a new covenant would be given them in new lands. This is where Apostle Paul quoted from Hosea to believing Roman Gentiles in Romans 9...
The below name "
Osee" is Greek for Hosea. The part below in red is Paul quoting from the Book of Hosea...
Rom 9:24-26
24 Even us, whom He hath called, not of the Jews only, but also of the Gentiles?
25 As He saith also in Osee, "I will call them my people, which were not my people; and her beloved, which was not beloved.
26 And it shall come to pass, that in the place where it was said unto them, 'Ye are not My people'; there shall they be called the children of the living God."
KJV
All the below verses are specifically about the ten tribes of the "house of Israel", until the very last verse in red where Apostle Paul quoted from...
Hosea 2:14-23
14 Therefore, behold, I will allure her, and bring her into the wilderness, and speak comfortably unto her.
15 And I will give her her vineyards from thence, and the valley of Achor for a door of hope: and she shall sing there, as in the days of her youth, and as in the day when she came up out of the land of Egypt.
16 And it shall be at that day, saith the LORD, that thou shalt call Me Ishi; and shalt call Me no more Baali.
17 For I will take away the names of Baalim out of her mouth, and they shall no more be remembered by their name.
18 And in that day will I make a covenant for them with the beasts of the field, and with the fowls of heaven, and with the creeping things of the ground: and I will break the bow and the sword and the battle out of the earth, and will make them to lie down safely.
19 And I will betroth thee unto Me for ever; yea, I will betroth thee unto Me in righteousness, and in judgment, and in lovingkindness, and in mercies.
20 I will even betroth thee unto Me in faithfulness: and thou shalt know the LORD.
21 And it shall come to pass in that day, I will hear, saith the LORD, I will hear the heavens, and they shall hear the earth;
22 And the earth shall hear the corn, and the wine, and the oil; and they shall hear Jezreel.
23 And I will sow her unto Me in the earth; and I will have mercy upon her that had not obtained mercy; and I will say to them which were not My people, 'Thou art My people'; and they shall say, 'Thou art My God.'
KJV
By Paul quoting that to Roman Gentile believers on Christ in the West reveals a fact that many miss about this; it reveals that the majority of the ten lost tribes were scattered to the new lands in the West to become the historical western Christian nations.
And because of the following...
1 Chron 5:1-2
5 Now the sons of Reuben the firstborn of Israel, (for he was the firstborn; but, forasmuch as he defiled his father's bed, his birthright was given unto the sons of Joseph the son of Israel: and the genealogy is not to be reckoned after the birthright.
2 For Judah prevailed above his brethren, and of him came the chief ruler; but the birthright was Joseph's:)
KJV
That "birthright" is not just about the transfer of the flesh father's wealth. It's about God's Birthright of Blessings and Promises, first given through Abraham, and includes The Gospel of Jesus Christ. Like Paul showed in Romans 11, God preserved His election of Grace, and the rest of Israel were spiritually blinded. Thus the Old Testament Patriarchs and prophets knew a lot more of what was going on with God's Promise by Faith. It's just a popular notion by many in the Church to think they were all ignorant about Christ and The Gospel.
John 8:56-58
56 Your father Abraham rejoiced to see My day: and he saw it, and was glad.
57 Then said the Jews unto Him, "Thou art not yet fifty years old, and hast Thou seen Abraham?"
58 Jesus said unto them, "Verily, verily, I say unto you, Before Abraham was, I am."
KJV