Verses 1–2
The Lot for Manasseh
The one “lot” for the tribe of Manasseh, that is the one piece of land, is divided into two pieces: one piece for Ephraim and one piece for Manasseh. Although Manasseh is the first-born (Genesis 41:51), first Ephraim, who is counted as the first-born (Genesis 48:13-Proverbs :) received his part of the inheritance. After that Manasseh gets his share of the inheritance. Machir seems to have been the only son of Manasseh (Genesis 50:23). The other sons are then in fact those of Machir.
Some of Machir’s sons, together with the tribes of Reuben and Gad, have taken possession of the inheritance in the wilderness side of the Jordan. Reuben and Gad want that land because they have a lot of cattle (Numbers 32:1; Numbers 32:5). Machir may also have a lot of cattle, although that is not mentioned of him. But he must have had a great predilection for that many cattle. In any case, he joins Reuben and Gad. That means a welcome reinforcement for them because he is “a man of war”.
The other sons of Manasseh choose for an inheritance in the land. Gideon belongs to the “sons of Abiëzer” (Judges 6:11; Judges 6:24Judges 6:34). Zelophehad’s daughters are descended from Hepher. The ten parts that tribe gets (Joshua 17:5) consist of six parts, containing five parts for the five sons, and a sixth part, that of Hepher, which is divided into five parts for the five daughters of Zelophehad.