2 Samuel 18:6

Against Israel - Implying that the revolt was in a great measure that of the ten tribes, Saul’s party, against the kingdom.

The wood of Ephraim - This would naturally be sought in the west of Jordan (marginal reference). But on the other hand it seems certain that the scene of this battle was on the east of Jordan. It seems therefore inevitable to conclude that some portion of the thick wood of oaks and terebinths which still runs down to the Jordan on the east side was for some reason called “the wood of Ephraim,” either because it was a continuation on the east side of the great Ephraimitic forests on the west, or because of some transaction there in which Ephraim had taken part, such as the slaughter of the Midianites Judges 7:24, or their own slaughter Judges 12:6.