Joseph Benson's Commentary of the Old and New Testaments - Psalms 78:9
Psalms 78:9. The children of Ephraim, being armed, turned back in the day of battle “This defeat of the Ephraimites,” says Dr. Hammond, from Kimchi, “was in the desert: and although the story be not mentioned in the books of Moses, yet it is written in the Chronicles, (see 1 Chronicles 7:21-22,) where, from the circumstances of Ephraim’s mourning, it appears it happened before the Israelites entered into Canaan; and the manner of the relation shows it was a considerable slaughter.” Bishop... read more
Albert Barnes' Notes on the Whole Bible - Psalms 78:9
The children of Ephraim - The sons of Ephraim; that is, the descendants of Ephraim; the tribe of Ephraim. Ephraim was one of the “largest” of the tribes of Israel, and was the “chief” tribe in the rebellion, and hence, the term is often used to denote the “ten” tribes, or the kingdom of Israel, in contradistinction from that of Judah. See Isaiah 7:2, Isaiah 7:5,Isaiah 7:8-9, Isaiah 7:17; Isaiah 11:13; Isaiah 28:1. The word is evidently used in this sense here, not as denoting that one tribe... read more