With the growth of the threat from Palestinian incursions, Beis Efraim bowed to Beis Shaul (bin Benyomen).
The accents of shevatim are distinctive enough so that when Yisra'elim of Gilead (Shevet Gad, Shevet Reuven, v Shevet Menashe) fight fugitives of Shevet Efraim who refuse to assist them in conquering the territory occupied by B'nei Ammon (modern day Hashemite Kingdom of Jordan, including jurisdiction over the Temple Mount, currently administrated by Jordan), their pronunciation of shivolet as siboleith is considered sufficient evidence to single out individuals from Efraim, so that they could be subjected to immediate death by Gad, allied with Menashe and Reuven, lead by Mikha'el Mimini. Recall that Moishe Rabbeinu permits Shevatim of Gad, Reuven, and Menashe to expand the borders of Yisra'el and establish their permanent settlement on the "East" Bank of the Jordan River, provided that they fulfill their vow to help everyone else conquer the West. The agreement over the Bank is conditional for K'lal Yisra'el: No East Bank, no Redemption.
Yechezkel inn perek 37:16-19 prophesies that one day Beis Yosef (B'nei Rokhel allied with exiled Shevatim Of Color) V Beis Y'hudah (B'nei Y'hudah, accompanied by their own Levitical Ministers) will be all together: loyal to the Monarchy of Beis David (ben Asherit-Ruth of Leah) for ever.
However, before this Shevatim Yisra'el union takes place ceremonially, Zekharyah in chapters 9:10 and 11:14, as well as Yirmeyahu in 30:1-5 report that Messiah bin Efraim and Messiah ben Y'hudah will be in conflict with each other and that a Civil War will occur prior to Geulah, and furthermore, Devarim 33:17 indicates that Efraim will one day battle against all the nations, aiming to decapitate their headquartered Migdal to destroy all enemies of Eretz Yisra'el.
