There was also a lot for the tribe of Manasseh - It was necessary to mark this because Jacob, in his blessing, ( Genesis 48:19, Genesis 48:20;), did in a certain sense set Ephraim before Manasseh, though the latter was the first-born; but the place here shows that this preference did not affect the rights of primogeniture.
For Machir - because he was a man of war - It is not likely that Machir himself was now alive; if he were, he must have been nearly 200 years old: It is therefore probable that what is spoken here is spoken of his children, who now possessed the lot that was originally designed for their father, who it appears had signalized himself as a man of skill and valor in some of the former wars, though the circumstances are not marked. His descendants, being of a warlike, intrepid spirit, were well qualified to defend a frontier country, which would be naturally exposed to invasion.
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.