Unto {i} Shem also, the father of all the children of {k} Eber, the brother of Japheth the elder, even to him were children born.

(i) In his stock the Church was preserved: therefore Moses stops speaking of Japheth and Ham, and speaks of Shem extensively.

(k) Of whom came the Hebrews or Jews.

Wesley's Notes

10:21 Two things especially are observable in this account of the posterity of Shem. The description of Shem, Ge 10:21, we have not only his name, Shem, which signifies a name; but two titles to distinguish him by. He was the father of all the children of Eber. Eber was his great grandson, but why should he be called the father of all his children, rather than of all Arphaxad's or Salah's? Probably because Abraham and his seed, not only descended from Heber, but from him were called Hebrews. Eber himself, we may suppose, was a man eminent for religion in a time of general apostasy; and the holy tongue being commonly called from him the Hebrew, it is probable he retained it in his family in the confusion of Babel, as a special token of God's favour to him. He was the brother of Japheth the elder; by which it appears, that though Shem be commonly put first, yet he was not Noah's first - born, but Japheth was elder. But why should this also be put as part of Shem's description, that he was the brother of Japheth, since that had been said before? Probably this is intended to signify the union of the Gentiles with the Jews in the church. He had mentioned it as Shem's honour, that he was the father of the Hebrews; but lest Japheth's seed should therefore be looked upon as shut out from the church, he here minds us, that he was the brother of Japheth, not in birth only, but in blessing, for Japheth was to dwell in the tents of Shem. The reason of the name of Peleg, Ge 10:25, because, in his days, (that is, about the time of his birth) was the earth divided among the children of men that were to inhabit it; either when Noah divided it, by an orderly distribution of it, as Joshua divided the land of Canaan by lot, or when, upon their refusal to comply with that division, God, in justice, divided them by the confusion of tongues.

Jamieson-Fausset-Brown Bible Commentary

21. Unto Shem-The historian introduces him with marked distinction as "the father of Eber," the ancestor of the Hebrews.

Matthew Henry's Concise Commentary

10:15-32 The posterity of Canaan were numerous, rich, and pleasantly seated; yet Canaan was under a Divine curse, and not a curse causeless. Those that are under the curse of God, may, perhaps, thrive and prosper in this world; for we cannot know love or hatred, the blessing or the curse, by what is before us, but by what is within us. The curse of God always works really, and always terribly. Perhaps it is a secret curse, a curse to the soul, and does not work so that others can see it; or a slow curse, and does not work soon; but sinners are reserved by it for a day of wrath Canaan here has a better land than either Shem or Japheth, and yet they have a better lot, for they inherit the blessing. Abram and his seed, God's covenant people, descended from Eber, and from him were called Hebrews. How much better it is to be like Eber, the father of a family of saints and honest men, than the father of a family of hunters after power, worldly wealth, or vanities. Goodness is true greatness.

Matthew Henry's Whole Bible Commentary

Verses 21-32

Two things especially are observable in this account of the posterity of Shem:-

I. The description of Shem, v. 21. We have not only his name, Shem, which signifies a name, but two titles to distinguish him by:-

1. He was the father of all the children of Eber. Eber was his great grandson; but why should he be called the father of all his children, rather than of all Arphaxad's, or Salah's, etc.? Probably because Abraham and his seed, God's covenant-people, not only descended from Heber, but from him were called Hebrews; ch. 14:13, Abram the Hebrew. Paul looked upon it as his privilege that he was a Hebrew of the Hebrews, Phil. 3:5. Eber himself, we may suppose, was a man eminent for religion in a time of general apostasy, and a great example of piety to his family; and, the holy tongue being commonly called from him the Hebrew, it is probable that he retained it in his family, in the confusion of Babel, as a special token of God's favour to him; and from him the professors of religion were called the children of Eber. Now, when the inspired penman would give Shem an honourable title, he calls him the father of the Hebrews. Though when Moses wrote this, they were a poor despised people, bond-slaves in Egypt, yet, being God's people, it was an honour to a man to be akin to them. As Ham, though he had many sons, is disowned by being called the father of Canaan, on whose seed the curse was entailed (ch. 9:22), so Shem, though he had many sons, is dignified with the title of the father of Eber, on whose seed the blessing was entailed. Note, a family of saints is more truly honourable than a family of nobles, Shem's holy seed than Ham's royal seed, Jacob's twelve patriarchs than Ishmael's twelve princes, ch. 17:20. Goodness is true greatness.

2. He was the brother of Japheth the elder, by which it appears that, though Shem is commonly put first, he was not Noah's first-born, but Japheth was older. But why should this also be put as part of Shem's title and description, that he was the brother of Japheth, since it had been, in effect, said often before? And was he not as much brother to Ham? Probably this was intended to signify the union of the Gentiles with the Jews in the church. The sacred historian had mentioned it as Shem's honour that he was the father of the Hebrews; but, lest Japheth's seed should therefore be looked upon as for ever shut out from the church, he here reminds us that he was the brother of Japheth, not in birth only, but in blessing; for Japheth was to dwell in the tents of Shem. Note, (1.) Those are brethren in the best manner that are so by grace, and that meet in the covenant of God and in the communion of saints. (2.) God, in dispensing his grace, does not go by seniority, but the younger sometimes gets the start of the elder in coming into the church; so the last shall be first and the first last.

II. The reason of the name of Peleg (v. 25): Because in his days (that is, about the time of his birth, when his name was given him), was the earth divided among the children of men that were to inhabit it; either when Noah divided it by an orderly distribution of it, as Joshua divided the land of Canaan by lot, or when, upon their refusal to comply with that division, God, in justice, divided them by the confusion of tongues: whichsoever of these was the occasion, pious Heber saw cause to perpetuate the remembrance of it in the name of his son; and justly may our sons be called by the same name, for in our days, in another sense, is the earth, the church, most wretchedly divided.