Rashi on Deuteronomy 31:23/רש"י על דברים ל״א:כ״ג

1ויצו את יהושע בן נון AND HE COMMANDED JOSHUA THE SON OF NUN — This has to be connected with v. 14 above, and it refers to the Shechinah (to God; “He commanded” means “God commanded”), as it distinctly states here “[for thou shalt bring the children of Israel] into the land which “I” swore unto them, [and “I” will be with thee]”.