I would pick up a book on linguistics if you’re legitimately interested. It’s not one if my areas of study.
The field of linguistics has to do with the content of language, and other aspects such as its evolution, but not its metaphysical origin.
The origin of language—more particularly the origin of information—has not been described in secular scholarship. Linguists have no clue about it. Neither does anyone in so called information sciences nor do any of the philosophers.
Scientists wouldn’t know how to even approach it, unless they admit language and information can only have come from God.