Matthew Henry on Genesis 10:1-7

This chapter shows concerning the three sons of Noah, that of them was the whole earth overspread. No nation but that of the Jews can be sure from which of these seventy it has come. The lists of names of fathers and sons were preserved of 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, Jer 25:22. That promise, Isa 42:4, The isles shall wait for his law, speaks of the conversion of the gentiles to the faith of Christ.