Genesis 11:10

10 These are the generations of Sem: Sem was a hundred years old when he begot Arphaxad, two years 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 so the Lord scattered them from that place into all lands, and they ceased to build the city.

9 And therefore the name thereof was called Babel, because there the language of the whole earth was confounded: and from thence the Lord scattered them abroad upon the face of all countries.

10 These are the generations of Sem: Sem was a hundred years old when he begot Arphaxad, two years after the flood.

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

12 And Arphaxad lived thirty-five years, and begot Sale.