Jamieson, Fausset & Brown, on Isa 11:13

“And the envy of Ephraim shall be taken away, and the enemies of Juda shall perish: Ephraim shall not envy Juda, and Juda shall not fight against Ephraim.”

“envy . . . of Ephraim . . . Judah--which began as early as the time (Jdg 8:1; Jdg 12:1, &c.). Joshua had sprung from, and resided among the Ephraimites (Num 13:9; Jos 19:50); the sanctuary was with them for a time (Jos 18:1). The jealousy increased subsequently (Sa2 2:8, &c.; Sa2 19:41; Sa2 20:2; Sa2 3:10); and even before David's time (Sa1 11:8; Sa1 15:4), they had appropriated to themselves the national name Israel. It ended in disruption (Kg1 11:26, &c.; 1Ki. 12:1-33; compare Kg2 14:9; Psa. 78:56-71). adversaries of Judah--rather, "the adversaries from Judah"; those of Judah hostile to the Ephraimites [MAURER]. The parallelism "the envy of Ephraim," namely, against Judah, requires this, as also what follows; namely, "Ephraim shall not envy Judah, and Judah shall not vex Ephraim" (Eze 37:15, Eze 37:17, Eze 37:19).”

Imported from an open dataset — not yet checked against the printed edition.