Man does not possess language. Man possesses the language of language… which is language. Since the language of language is the language of language, the language of language is least like language. Language is infinitely vaster than its language happens to be. Language and its language are an expression, a manifestation, of Dasein. Dasein is an incomplete copy of itself.
Language and its language might very well speak the same language.
Featured Image:James Gillray, Public domain, via Wikimedia Commons