Sforno on Deuteronomy 10:8/ספורנו על דברים י׳:ח׳

1בעת ההיא הבדיל, after G’d had already set aside the tribe of Levi as the tribe to perform the holy service in the Temple so that you are not deemed worthy for this task, my prayer was not effective enough except to prevent G’d from destroying you, so that He said to me: “arise and make them journey, and be in front of the people!” (verse 11) The expression is used in the same sense as in Numbers 10,2)