פירוש על שמות 4:18

וישב אל יתר חתנו AND HE RETURNED TO JETHRO HIS FATHER-IN-LAW, to obtain his permission to go to Egypt, for he had sworn to him that he would not leave Midian except by his permission (Nedarim 65a). He is here called יתר and he had seven names: Reuel, Jether, Jethro, Keni, Hobab, Cheber and Putiel (cf. Mekhilta d'Rabbi Yishmael 18:2)

וישב, he returned from the desert to his father-in-law Yitro.

אלכה נא ואשובה, in the interval I will leave my wife and children in your care.