Matthew Henry Commentary Genesis 10:1-7

"Now these are the generations of the sons of Noah, [namely], of Shem, Ham, and Japheth: and unto them were sons born after the flood. The sons of Japheth: Gomer, and Magog, and Madai, and Javan, and Tubal, and Meshech, and Tiras. And the sons of Gomer: Ashkenaz, and Riphath, and Togarmah. And the sons of Javan: Elishah, and Tarshish, Kittim, and Dodanim. Of these were the isles of the nations divided in their lands, every one after his tongue, after their families, in their nations. And the sons of Ham: Cush, and Mizraim, and Put, and Canaan. And the sons of Cush: Seba, and Havilah, and Sabtah, and Raamah, and Sabteca; and the sons of Raamah: Sheba, and Dedan." — Genesis 10:1-7 (ASV)

This chapter shows, concerning the three sons of Noah, that from them the whole earth was overspread.

No nation, except for the Jews, can be sure from which of these seventy it descended. The lists of names of fathers and sons were preserved by the Jews alone, for the sake of the Messiah.

Many learned men, however, have, with some probability, shown which of the nations of the earth descended from each of the sons of Noah.

To the posterity of Japheth were allotted the isles of the gentiles; probably, the island of Britain among the rest.

All places beyond the sea from Judea are called isles (Jeremiah 25:22). That promise, Isaiah 42:4, The isles shall wait for his law, speaks of the conversion of the gentiles to the faith of Christ.