1)
How many classes are taught in this verse?
1.
Malbim: There are four - some were Roshei Batei Avos, some were chosen due to their level, some were valiant soldiers, and some were Roshei Nesi'im.
2)
What do we learn from "Roshei ha'Nesi'im"?
1.
Redak (32) #1: They were heads even to the Nesi'im of the Shevet, due to their great Gevurah.
2.
Radak (32) #2: It means Roshim ha'Nesi'im (he heads, the Nesi'im).
