John Gills Exposition of the Bible Commentary - Genesis 10:21
Unto Shem also, the father of all the children of Eber ,.... And for the sake of those Shem is particularly said to be the father of, is this genealogy given, and indeed the whole book of Genesis wrote: Eber was the great-grandson of Shem, and is here spoken of by anticipation, and Shem is called not the father of either of his immediate sons, but of the posterity of this man; because the Hebrews sprung from him in his line, among whom the church of God and the true religion were preserved,... read more
Matthew Henry's Complete Commentary - Genesis 10:21-32
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... read more