13 And these are the names of the sons of Ishmael, by their names, according to their generations: the firstborn of Ishmael, Nebajoth; and Kedar, and Adbeel, and Mibsam,
(Verse 13) And these are the names of the sons of Ishmael, by their names, according to their generations. The firstborn of Ishmael was Nebaioth, and Kedar, and the rest, up to the place where it is said: They lived from Havilah to Shur, which is opposite Egypt as you go towards Assyria. He fell in the sight of all his brothers. Twelve sons were born to Ishmael, and the firstborn was Nebaioth, from whom the whole region from the Euphrates to the Red Sea is called Nebaioth until this day, which is part of Arabia. For both their families, towns and villages, fortified castles, and three of them, Cedar in the desert, and Duma in another region, and Theman to the south, and Cedema to the east, are celebrated with this name. But what we read in the final section of this chapter, according to the Septuagint, is that he dwelt opposite the face of all his brothers (Gen. XIII, 18): it is more accurate to say what we have put, he died in the presence of all his brothers, that is, he died in the hands of all his children, with his surviving children, and with no one dying before him. But to be called brothers for the sons, Jacob also shows to Laban, saying: What is my sin, because you have persecuted me: and because you have searched all my vessels? What have you found of all the vessels of your house? Let it be placed before my brothers and your brothers: and let them judge between us (Ibid. 35). For we cannot believe, as Scripture recounts, that Jacob, apart from his children, had any brothers with him.
[AD 420] Jerome on Genesis 25:13