Shared ground
These two verses extend Isaiah 25’s “reversal” theme: God secures a place of joy for his people (the mountain scene just before), and at the same time he humiliates a proud opponent. The text explicitly says Yahweh’s “hand” rests on “this mountain,” and that Moab is brought low under that hand (Isa 25:10–11). “Hand” here communicates active power and settled control, not a brief touch.
Moab’s downfall is described in deliberately degrading images: straw stomped into the water of a dung pit, and a swimmer’s frantic arms that cannot keep him from being forced down. The passage’s point is not only defeat but the collapse of pride and of “the craft of his hands”—human capability, strategy, or practiced skill—when God acts (Isa 25:11).
Where interpretation differs
Two details are debated.
First, “this mountain.” Many read it as the same mountain already in view in the chapter’s feast and deliverance scene (a Zion/Jerusalem-centered picture). Others read it more generally as the symbolic place where God rules and protects, without tying it to one physical site.
Second, who is “he” in verse 11. Some take it as Moab personified (Moab acting like a swimmer in the filthy water). Others take it as an individual representative of Moab, used to make the picture more vivid.
Why the disagreement exists
The passage is poetic and compresses multiple images quickly. Pronouns (“he”) can refer back to a nation-name as a person, and “mountain” language in Isaiah can work both as a concrete location and as a symbol for God’s reign.
What this passage clearly contributes
It adds a sharp contrast within the same scene: the place where God’s hand “rests” is stability and celebration for some, but crushing humiliation for proud hostility. It also makes an explicit claim about limits: pride and human “hand-skill” are shown as ineffective when Yahweh decides to bring someone low. The imagery communicates total reversal—struggling, clever effort cannot cancel God’s lowering action.