Put some of thine honour upon him That is, communicate some of thy authority to him at present; no longer use him as a servant, but as a brother, and as thy associate in the government. This was enjoined in order that the people, being used to obey him while Moses lived, might do it afterward the more cheerfully.
Related Commentaries of Numbers 27:20
Numbers 27:20
20 And thou shalt put some of thine honour upon him, that all the congregation of the children of Israel may be obedient.