The Whole Bible is one story about how a people became divided, separated and then reunited under Christ. It is not two separate books about two different groups of people.
Isaiah 7:1 “And it came to pass in the days of Ahaz the son of Jotham, the son of Uzziah, king of Judah, that Rezin the king of Syria, and Pekah the son of Remaliah, king of Israel, went up toward Jerusalem to war against it, but could not prevail against it.”
For those of you who are Judeo-Christians, do you understand what was happening in Isaiah 7:1? The nation of the House of Israel, the Ten Northern Tribes, led by King Pekah, was going up to Jerusalem to attempt to conquer the House of Judah, the Two Southern Tribes. There were no Jews in existence. This was ten of the tribes of Israel going to fight two of the tribes of Israel. Another brother fights brother situation. This is evil. God did not allow the House of Israel to prosper in this. As evil as both sides were, the House of Judah was more righteous over time.
The solution for both Houses of Israel came with Christ. The middle wall of partition was broken down.
Ephesian 2:14 “For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us”.
and
Hosea 1:11 “Then shall the children of Judah and the children of Israel be gathered together, and appoint themselves one head, and they shall come up out of the land: for great shall be the day of Jezreel.”
This has all happened as prophesied in Hosea and shown in Ephesians 2. One can not be reconciled if the two groups were never a single unit under God in the past.
“Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace; And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby: And came and preached peace to you which were afar off, and to them that were nigh.” Ephesians 2:15-17.
Those who were far off, the House of Israel in exile in Europe and those near, the House of Judah. God moved them all to the new promised land where they were reunited under one head, Christ, as it is this day. God keeps His promises. Praise God!
The modern day Jews are not, and have never been, God’s Israel people.