The Northern Kingdom (Ephraim) and the Southern Kingdom (Judah) differed both politically and religiously. They have never been united since their split following the days of Solomon. Joseph being sold by his brothers foreshadows the dividing of the nation of Israel into Northern Kingdom and Southern Kingdom. Joseph�s unification with his brothers foreshadows the unification of Ephraim and Judah in the end of days. The Ten Tribes did not unite with Judah at the end of the Babylonian captivity during the days of Ezra and Nehemiah. Orthodox Jews pray three times a day for the ingathering of the exiles of Israel. It is the Messiah who will gather the exiles of Israel.