Thank you Zechariah for bearing with me… may I put forward the following points:
In any case, I want to thank you as I enjoy these discussions very much because it challenge one to keep studying.
That is a bit like saying there was no such thing as a "jaguar" before until 500 years ago, because that is when "J" was introduced in English, The fact is that we speak English and the English word in the English texts of Ester, Philo, Josephus and the "New Testament" is "Jew".
In acts Paul is asked if he can speak Greek and he replies "I am a Jew..." If someone asks me if I can speak German and I reply "I am an American..." I am saying by implication "no"
By argument three we should also not use terms like "Jerusalem" or worse yet, make ridiculous statements that Jerusalem did not exist until about 500 years ago.
See: Are Nazarenes Jews?
More than 500 years ago, you would also not have been: Both literally and figuratively. But Yakov would have been.
The Jaguar would have been Yaguareté and Jerusalem would have been Yerushalayim.
But someone seeing the animal may also have called it in error a Leopard or Panther. Depending on who you have asked the Set Apart City may have been referred to as Salem, Yevus, Rušalim or even Yhwh Yir'eh Shalem. So changing names even to accommodate translations or transliterations cause inevitable confusion at best and deception at worst.
I have had many arguments trying to convince people to refrain from using the name Jesus and rather use Yeshua. Can you see that my same fundamental approach to this is why I kept going on about “who are the Jews”?
However, during my research I have come to an interesting conclusion: After the fall of Jerusalem in 70CE and the dispersion of the believers, the term Ioudaios (Jew) came into general use referring not only to the true believers from the Yahudim / Judeans but also to those new "converts" in all 12 the tribes. So to use the word Jew today for those in all the tribes who follow and trust in YHWH / Yeshua seems to be correct. This was quite a revelation to me and has now laid to rest in my mind the issue and I will be happy to be called Jooste the Jew. With the hope that the following are about to come to fruition:
“And He will set up an ensign for the nations, and will assemble the dispersed of Yisra’el, and gather together the scattered of Y’hudah from the four corners of the earth. The envy also of Efrayim shall depart, and they that harass Y’hudah shall be cut off. Efrayim shall not envy Y’hudah, and Y’hudah shall not vex Efrayim.” (Is.11:12,13)