Verses 18 to 23 follow Gen. 10:24-29 almost exactly. Between Arphaxad and Shelah, the LXX in Gen. 10:24; 11:12, 13, adds Cainan. This name is not found in the present Hebrew text of Genesis, but it is found in Luke’s genealogy of Christ (Luke 3:36).
Thus far 14 “sons of Japheth” have been listed, 30 “sons of Ham,” and 26 “sons of Shem,” a total of 70 in all in this series.