Isaiah 33:19

19 aYou will see no more the insolent people,
the people bof an obscure speech that you cannot comprehend,
stammering in a tongue that you cannot understand.

Isaiah 36:11

11Then Eliakim, Shebna, and Joah said to the Rabshakeh, “Please speak to your servants cin Aramaic, for we understand it. Do not speak to us in the language of Judah within the hearing of the people who are on the wall.”
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