He went into his own land — It is supposed the Kenites mentioned 1 Samuel 15:6, were the posterity of Jethro, (compare Judges 1:16,) and they are taken under special protection, for the kindness their ancestor shewed to Israel.
Related Commentaries of Exodus 18:27
Exodus 18:27
27 And Moses let his father in law depart; and he went his way into his own land.