Ruth 4:11:
And all the people that were in the gate, and the elders, said, We are witnesses. The LORD make the woman that is come into thine house like Rachel and like Leah, which two did build the house of Israel: and do thou worthily in Ephratah, and be famous in Bethlehem:

Leah being a firstborn her son judah received the firstborn blessing of the scepter/kingship as we see David has to be from the line of Judah therefore the blessings of Judah is David’s inheritance.

Rachael being the second born was the favored one and her firstborn son Joseph received the birthright which in the end this final son of Joseph will use the birthright to become high priest during the millennium.

1 Chronicles 5:2
King James Version
2 For Judah prevailed above his brethren, and of him came the chief ruler; but the birthright was Joseph's:)





Therefore just as Rachael and Leah built the house of Israel this final son of Judah and final son of Joseph will reunite the northern and southern kingdoms of Israel and the house of Israel will once again be whole.





We see here the two representatives of the two kingdoms of Israel. God will join the two representatives Joseph and Judah and then the two representatives will be sent by God to reunite the two kingdoms to make Israel one house once again.