'Language' in the Bible

Then Eliakim, the son of Hilkiah, and Shebna and Joah said to the Rab-shakeh, Will you kindly make use of the Aramaean language in talking to your servants, for we are used to it, and do not make use of the Jews' language in the hearing of the people on the wall.

Then the Rab-shakeh got up and said with a loud voice in the Jews' language, Give ear to the words of the great king, the king of Assyria;