Can it be that these Evangelicals have their root in Shevet Ephraim whereby they accepted Christianity in the land to where they were exiled.
In any case one can not deny that in todays news, Evangelicals are proving themselves as the watchmen for the Shomron and protecting Israel's Birthright. Here is one example: http://shemittahrediscovered.blogspot.com/2011/12/protest-destruction-of-shul-and.html
Biblical Locations of the Lost Ten Tribes. Scriptural Proof Attributes in Exile by Yair Davidiy
BRIT-AM DISCUSSES THE HEBREW LANGUAGE
AND HEBREW PROPHETS ALLUSION TO CHRISTIANITY
Yair Davidiy #2 - The Lost Tribes of Israel