Arphaxad was one of Shem's sons.
Translators may add a footnote note that says: "The name Peleg means 'division.'"
the earth was divided
This can be made active. AT: "the people of the earth divided themselves" or "the people of the earth separated from one another" or "God divided the people of the earth" (See: rc://en/ta/man/translate/figs-activepassive)