1)
What do we learn from "Hemah Rabu"?
1.
Radak: Because they increased, they increased their border until Chermon and Senir.
2.
Malbim: Because Chetzi Menasheh increased more than Bnei Gad and Bnei Reuven, they spread more.
2)
What do we learn from "u'Vnei Chatzi Menasheh Yashvu ba'Aretz"?
1.
Malbim (26): They remained in their land even after Reuven and part of Gad were exiled, until Tiglas exiled Gil'ad (refer to 5:36:1:2.
