Joshua 17:1

Manasseh, as the “first-born,” was to receive not only the territory on the east of Jordan won by the valor of the Machirites, but also a portion with the other tribes on the west of Jordan, the holy land of promise strictly so called. Thus, though Ephraim took precedence of Manasseh, according to the prediction of Joseph Genesis 48:20, yet Manasseh received “the double portion” which was the special privilege of the first-born Deuteronomy 21:17.