Genesis 11:10

10 These are the generations of Shem: Shem was one hundred years old and begat 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 So the LORD scattered them abroad from there upon the face of all the earth, and they left off to build the city.

9 Therefore the name of it was called Babel because there the LORD confounded the language of all the earth, and from there the LORD scattered them abroad upon the face of all the earth.

10 These are the generations of Shem: Shem was one hundred years old and begat Arphaxad two years after the flood:

11 And Shem lived after he begat Arphaxad five hundred years and begat sons and daughters.

12 And Arphaxad lived thirty-five years and begat Salah;