Genesis 11:10

10 These are the generations of Shem. Shem was a hundred years old when he became the father of Arpachshad, two years after the great flow of waters;

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 God sent them away into every part of the earth: and they gave up building their town.

9 So it was named Babel, because there the Lord took away the sense of all languages and from there the Lord sent them away over all the face of the earth.

10 These are the generations of Shem. Shem was a hundred years old when he became the father of Arpachshad, two years after the great flow of waters;

11 And after the birth of Arpachshad, Shem went on living for five hundred years, and had sons and daughters:

12 And Arpachshad was thirty-five years old when he became the father of Shelah: