Genesis 10:1

These are the generations of the sons of Noah: Shem, Ham, and Japheth; and sons were born to them after the flood. The sons of Japheth: Gomer, and Magog, and Madai, Javan, and Tubal, and Meshech, and Tiras. The series of Noah's offspring begins with his youngest son and is completed in the eldest, which is a familiar expression in the holy scriptures, mystically signifying that the lesser people of the nations would be preferred in faith over the greater people of the Jews when Christ came in the flesh. The sons of the sons of Noah who are mentioned are believed to have been progenitors of various nations who divided the world among them in such a way that Shem, the firstborn, inherited Asia, and Ham, the second, Africa, and Japheth, the last, Europe; yet because Asia is much larger in extent of land than Europe or Libya, the offspring of Ham and Japheth would also hold some portion in Asia. Thus, seven sons were born to Japheth who took possession of the land in Asia from the mountains of Amanus and Taurus in Syria, Cilicia's mountains, up to the river Tanais. In Europe, up to Gadira, they left names for places and nations, many of which later changed names, while others remained as they were. Therefore, Gomer are the Galatians, Magog the Scythians, Madai the Medes, Javan the Ionians, who are also Greeks, from whom the Ionian Sea is named, Tubal the Iberians, who are also the Spanish named from the river Ebro, from whom the Celtiberians come, although some suspect them to be Italians; Meshech are the Cappadocians, where a city among them is still called Mazaca today, also called Caesarea by Augustus Caesar. Meanwhile, the seventy interpreters believe Capturim to be the Cappadocians, Tiras the Thracians, whose name has not changed much.

In the same book [of Genesis], when the generations of the sons of Noah are recalled to our minds, we read, "These are the children of Ham in their tribes according to their tongues, in their lands and nations." Also, in enumerating the sons of Shem, it is said, "These are the children of Shem in their tribes according to their tongues, in their lands and nations." And this is added in reference to all of them: "These are the tribes of the sons of Noah, according to their generations and according to their nations. From these were the islands of the nations scattered over the earth after the flood. And the whole earth was one tongue, and there was one speech for all." And so, because this sentence was added: "And the earth was one tongue and there was one speech for all" (that is, one language for them all), it could be inferred that at that time, when human beings had been scattered according to the islands of the nations over the earth, there was one language common to all of them. Without a doubt, this contradicts the words used above, "according to their tribes and tongues." For, each single tribe that had formed individual nations would not be said to have had its own tongue when there was a common one for all. So it is by way of recapitulation that there is added: "And the earth was one tongue, and there was one speech for all." The narrative, without mentioning it, goes back to tell how it came about that the one language common to all men was broken up into many tongues. And immediately we are told about the building of the tower, when this punishment for their pride was inflicted upon them by the divine judgment. After this event they were scattered over the earth according to their languages.