Jamieson, Fausset and Brown on Isaiah 25:10

10. rest--as its permanent protector; on "hand" in this sense; compare Ezr 7:6, 28.

Moab--while Israel is being protected, the foe is destroyed; Moab is the representative of all the foes of God's people.

under him--Rather, "in his own place" or "country" (Ex 10:23; 16:29).

for the dunghill--Rather, "in the water of the dung heap," in which straw was trodden to make it manure (Psa 83:10). Horsley translates either, "in the waters of Madmenah," namely, for the making of bricks; or as the Septuagint, "as the threshing-floor is trampled by the corn-drag" (see Margin; Mi 4:11-13).