The term Christos from the Greek was intended as a mirror to the Hebrew Messiah. A language predates a writing. That’s how language and writing work. Don’t get caught up in the literal semantics of who used which term before the other. And when the text of the New Testament was penned in the common language Koine Greek, there were cases of necessary adaptation of terms referenced in the Hebrew writings into Greek. The “Natsarim” are a group of what was referred to in Galatians by the Apostle Paul as the “Judaizers” who wanted to bring Talmudic filth into the scriptures with all of the rituals, ceremonies, and self-aggrandizing works associated with that Babylonian occultism. In short, fuck that jew shit.