Long before Jacob/Israel, your reading Genesis 10:21-31 the decendents of Shem through Eber and they were called "Gentiles"! This is confirmed in many quality historical sources, Gentiles are Shemites always have been they are descended from Shem-Eber, the Greeks like the Romans and Britons, Celts are all Shemites, like Jacob/Israel was also descended from Shem and Eber and Abraham, just like the Lord Himself who came from "Galilee of the Gentiles" Matthew 4:15....The Galatians were Celtic that is correct, they were Shemites, gentiles and came through the line of Jacob/Israel, they made their way out of Assyrian Captivity crossing the Caucuses Mountains via 'Israel Pass' to the Black Sea and then into Europe.
Hi Cup. I'll have to pick up Biblical references to turn back some of your theories.
1) It is possible that "Gentiles" are the descendants of Shem through Eber. But these do not include the peoples you mention, like the Greeks etc. You are wrong here.
2) Who are the Greeks according to the Bible? Genesis 10:2: "The sons of Japheth:
Gomer, Magog, Madai,
Javan, Tubal, Meshech and Tiras."
Greece is here Javan. How can we know this? Because the Prophet Daniel speaks of them too:
8:21: "And the young he-goat, the hairy one, [is] the king of Javan; and the great horn that [is] between its eyes is the first king;"
11:2: and, now, truth I declare to thee, Lo, yet three kings are standing for Persia, and the fourth doth become far richer than all, and according to his strength by his riches he stirreth up the whole, with the kingdom of Javan.
And even Zechariah speaks of Javan: "For I have trodden for Me Judah, A bow I have filled [with] Ephraim, And I have stirred up thy sons, O Zion, Against thy sons, O Javan, And I have set thee as the sword of a hero".
If you check these passages in most Bibles the translation of
"Javan" is "Greece".
Example, New King James says: Daniel 8:21: "And the male goat
is the kingdom of Greece. The large horn that
is between its eyes
is the first king" (you can check other Bibles and other passages noted above, and find the same facts).
And because of this, the Greeks can't be descendants of Shem, since Japhet was the brother of Shem (and the father of Javan).
This point is strengthened by the fact that Madai, the brother of Javan, is identified as Persia. Yet, Persia is mixed of two peoples; the Japhetite Madai (in European: Media), and the Shemite Elam. Elam was the oldest of the Shemite brothers (Gen 10). The other Shemites are:
Assur (Assyria-> geographically Iraq),
Lud (Lydians, of modern Anatalia where the Turkish state now lies), and
Aram, a common name for Syria.
And of course, the third brother among these five sons of Shem, was Arpaxad, the forefather of Eber, Abraham and Jesus himself - in addition to the Ishmaelites (-> Arabs).
Your claim that the Greeks are Shemites has been refuted by the Bible itself. The claim that Romans, Britons and Celts should be is highly doubtable, although we can't know much about the ancient history of at least Celts and Britons. Concerning England as such, peoples there have been mixed over and over again for millennias, first the Picts, then the Celts, then the Romans, then the Angles and Saxons, then the Vikings/Norse, then the Norman-French etc.
So the question may indeed be: how can "Britons" be identified? Commonly they are noted as the mix between native Celts-Picts and Romans during the time when the Roman Empire occupied Britian. "King" Arthur (ca 4-500 AD) was supposedly a Briton.
A common theory about the population processes of Europe is that the oldest peoples were the Basques (southwest) and the Picts (northwest). Then Celts, Romans, Huns, Germans, Slavs, Turks, Mongols etc. came from the east to supplant and drive away the group arriving before them (such as pressuring the Celts out of Germany and Gaul, eventually only to Ireland itself). It is possible that some of these were somehow related to the lost tribes of Israel, but we can't know for sure.
Well, anyway, the Bible speaks against your identification of the Greeks as Shemites...