During a tense standoff with the Assyrian empire, Judean leaders attempt to manage a psychological battlefield and control the flow of information to the public. As negotiations unfold, the officials ask the Assyrian representative, Rabshakeh, to conduct the discussion in Aramaic, which served as the standard diplomatic language among nations at the time. The Judean leaders explain that as senior government officials, they are fully fluent in foreign languages and can easily understand him [רש״י, ביאור שטיינזלץ]. However, their real motive is to stop him from speaking the local Judean language.
The primary approach among commentators is that this request is driven by the presence of soldiers and common people listening from the city walls. The officials argue that sensitive military and political matters should not be debated in a public forum [מצודת דוד, ביאור שטיינזלץ]. Beyond the issue of protocol, the leaders harbor a deep fear. They worry that if the guards hear the enemy's terrifying threats in their own native tongue, their spirit will break and they will abandon the defense of the city [רלב״ג].
This request, however, presents a logical problem. The Assyrian representative's exact goal is to spread fear among the masses. By openly showing their concern, the Judean leaders would seemingly encourage him to keep speaking the local language. To resolve this, some suggest that the officials are actually employing a clever psychological tactic. According to tradition, Rabshakeh was a Jew who had abandoned his faith. The Judean leaders appeal to his pride, arguing that it is beneath his dignity to discuss royal affairs in front of commoners. Furthermore, they subtly warn him that by speaking the local language and making religious claims about the will of God, he might make his Assyrian masters suspicious of his true loyalties. By framing their request in this way, the officials try to make it seem as though they are looking out for his honor and political safety, rather than acting out of fear for the people of Jerusalem [אברבנאל].