Hate to disagree. But Alexander the Great, whose father was Philip of Macedon, was Macedonian but trained in languages in Greece and became enamored of the Greek language and culture. Being so enamored he adopted Greek language and culture and spread it as he conquered. That is how the New Testament came to be recorded in Koine Greek—a sort of “lingua franca” of the Mideast which was the result of Alexander’s Empire being split among his three generals.
You can disagree , but the fact of the matter is Alexander the Great and the ancient Macedonians were Greeks. The Romans were enamored with Greek language and culture but they didn't spread it across every place they conquered. We have ancient sources and evidence that identify the Macedonians as Greeks.