John Gill Commentary 2 Kings 18:26

"Then said Eliakim the son of Hilkiah, and Shebnah, and Joah, unto Rabshakeh, Speak, I pray thee, to thy servants in the Syrian language; for we understand it: and speak not with us in the Jews` language, in the ears of the people that are on the wall." — 2 Kings 18:26 (ASV)

(See Gill on 2 Kings 18:17)