There’s a verse in the OT that speaks about only Israelites being put in positions of authority (political) in Israel during the Millennium. Do you know what verse it is? I remember reading it one day and now I can’t remember where it is.
I’m not sure what verse you are referring to in your comment. The ones “in charge” during the Millennium/Messianic Age will not be human beings at all, but rather the saints of all nations (Israelite and non-Israelite) who will be changed to spirit beings at the time of the return of Jesus Christ/Yahshua (Revelation 20:4).