Among the medieval commentators there are two different approaches concerning the verses that appear to have been added at a later time. The more widely accepted approach attributes them to Moshe, who wrote them in a spirit of prophetic foresight. The other approach, advocated by Ibn Ezra and some of the sages of Germany, maintained that the Torah contains verses that were added by prophets at a later stage.

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion