Genesis 11:10

10 And these the generations of Sem: and Sem was a hundred years old when he begot Arphaxad, the second year after the flood.

Genesis 11:10 Meaning and Commentary

Genesis 11:10

These are the generations of Shem
Or a genealogy of the posterity of Shem; not of all of them, only of those of the line which led to Abraham, by which might appear the true line in which the Messiah from Adam through Abraham sprung:

Shem was one hundred years old, and begat Arphexad two years after
the flood;
by which it is pretty plain that he was younger than Japheth; (See Gill on Genesis 10:21) of Arphaxad his son, (See Gill on Genesis 10:22).

Genesis 11:10 In-Context

8 And the Lord scattered them thence over the face of all the earth, and they left off building the city and the tower.

9 On this account its name was called Confusion, because there the Lord confounded the languages of all the earth, and thence the Lord scattered them upon the face of all the earth.

10 And these the generations of Sem: and Sem was a hundred years old when he begot Arphaxad, the second year after the flood.

11 And Sem lived, after he had begotten Arphaxad, five hundred years, and begot sons and daughters, and died.

12 And Arphaxad lived a hundred and thirty-five years, and begot Cainan.