Adam Clarke on Deuteronomy 9:1

Thou art to pass over Jordan this day - היום haiyom, this time; they had come thirty-eight years before this nearly to the verge of the promised land, but were not permitted at that day or time to pass over, because of their rebellions; but this time they shall certainly pass over. This was spoken about the eleventh month of the fortieth year of their journeying, and it was on the first month of the following year they passed over; and during this interim Moses died.