Shared ground
Isaiah 36:11–12 presents language as a strategic tool in a siege. Judah’s officials (Eliakim, Shebna, Joah) try to limit the audience by requesting “the Syrian language,” which they understand, and asking Rabshakeh not to use “the Jews’ language” where the wall-watchers can hear (explicit in the text). Their concern is not translation accuracy but message control: keeping negotiations from becoming public fear and rumor (inferred from their stated aim).
Rabshakeh refuses and reframes the moment as intentionally public. He claims his commission is not only for leaders but also for “the men who sit on the wall,” and he sharpens the threat with a graphic picture of siege deprivation (explicit in the text). In this scene, speech functions as a weapon alongside armies: a battle for what the population believes and how long it will hold.
Where interpretation differs (only where needed)
Two main details are read in more than one reasonable way.
First, “the Syrian language” is commonly understood as Aramaic, a regional diplomatic language; some take it more broadly as a “Syrian/Aramean” dialect category without pressing an exact linguistic label (difference about precision, not about the point).
Second, Rabshakeh’s crude line about eating waste and drinking “their own water” is taken either as (a) a blunt but realistic description of what siege conditions can force, or (b) a deliberately shocking taunt meant to terrify and humiliate, not necessarily a prediction of literal behavior (difference about how literal the image is).
Why the disagreement exists
The passage reports a short exchange without pausing to explain terms or tone. Ancient language names can overlap (ethnic, regional, and linguistic labels), and siege rhetoric often mixes real dangers with deliberate intimidation. That leaves room for readers to weigh how technical the language reference is and how far the threat should be taken as literal versus psychological warfare.
What this passage clearly contributes
This text clearly contributes a grounded picture of how imperial power pressures a city: by aiming propaganda at the general public, not only decision-makers. It also shows Judah’s leaders attempting to contain information and manage morale by controlling the language of diplomacy. The narrative emphasizes that the conflict is fought with words as well as force, and that the “audience” is itself a contested space (Isaiah 36:1–22).