'Language' in the Bible

“Behold, I am bringing a nation against you from far away, O house of Israel,” says the Lord.“It is a mighty and enduring nation,It is an ancient nation,A nation whose language you do not know,Whose words you do not comprehend.

“How can you say, ‘We are wise,And the law of the Lord is with us [and we are learned in its language and teachings]’?Behold, [the truth is that] the lying pen of the scribesHas made the law into a lie [a mere code of ceremonial observances].