In a 2005 lecture on Deut. 30, Dennis Prager says: “A lot of people wonder why there is so much repetition [in the Torah]. The reason is pedagogic.
“When I make a new point [on the radio], I get no calls. It is as if I didn’t say anything. When I will say it for about the fifth time, I’ll start getting emails and calls. It might be the most brilliant point in the world, but if I make it once, it’s as if I never said it.”