Are the 144,000 all Jews? Answer from the Scriptures
There is neither Jew nor Greek, there is neither slave nor freeman, there is neither male nor female; for you are all one person in union with Christ Jesus. Moreover, if you belong to Christ, you are really Abrahams seed, heirs with reference to a promise.Gal. 3:28, 29.
He is not a Jew who is one on the outside, nor is circumcision that which is on the outside upon the flesh. But he is a Jew who is one on the inside, and his circumcision is that of the heart by spirit, and not by a written code.Rom. 2:28, 29.
The 144k represent the 12 tribes of Israel. It is not talking about Christians but about the specific tribes. Gal. 3:28-29 is talking metaphorically, not literally.
Piecemeal understanding does not work. It all has to fit together.
The Watchtower cult controls its message via Biblical vivisection. No serious religious scholars or theologians take the cult serious for this reason: they cannot put together a coherent view of the Bible that makes sense. JW theology is like taking a masterpiece and cutting it up and making a meaningless collage out of the pieces.
It's not even an aesthetically pleasing collage.