how did our language derive from nothing?

Well, it didn't. Our complex written language evolved from stylized pictures (pictograms). Our complex spoken language developed as a result of the vastly versatle vocal apparatus and the large portions of our brains given over to social interaction.But why do we have language at all? I would presume that the survival benefit of language is obvious to you, right?At any rate, your thread makes a great arena to look at the often-scary parallels between evolution of language and evolution of species. They're almost exactly alike.

Because we share social interactions, but largely not language, with our closest evolutionary relatives, apes such as chimpanzees, gorillas, and gibbons.

And, yet, creationists like yourself rely on medical science that wouldn't be possible if evolution weren't fundamentally accurate. Contradictions, indeed!

Why don't you ask a doctor? It's because we can think that we recognize the fundamental accuracy of evolution; it's because we can model evolution that we can develop countermeasures to populations of pathogens.