Out of Ephraim - a root of them - Deborah probably means that out of Ephraim and Benjamin came eminent warriors. Joshua, who was of the tribe of Ephraim, routed the Amalekites a short time after the Israelites came out of Egypt, Exodus 17:10. Ehud, who was of the tribe of Benjamin, slew Eglon, and defeated the Moabites, the friends and allies of the Ammonites and Amalekites. Machir, in the land of Gilead, produced eminent warriors; and Zebulun produced eminent statesmen, and men of literature. Probably Deborah speaks here of the past wars, and not of any thing that was done on this occasion; for we know that no persons from Gilead were present in the war between Jabin and Israel. See Judges 5:17. Gilead abode beyond Jordan.
Render “Of Ephraim (Deborah‘s own tribe) came down those whose root is in Mount Amalek Judges 12:15; after thee (O Ephraim) came Benjamin among thy people; of Machir (the west-Jordanic milies of Manasseh. See Joshua 17:1-6) there came down the chiefs, and of Zebulon they that handle the staff of the officer” the military scribe, whose duty it was, like that of the Roman tribunes, to keep the muster roll, and superintend the recruiting of the army. (See 2 Kings 25:19.)