Musar zu Schemot 16:21

While explaining this we will also answer the question why twelve spies had been needed for that missionץ Another question that needs to be dealt with is why the Torah had to tell us that the time the spies went on their mission was the beginning of the grape harvest (13,20). Another difficulty that we plan to explain is the comment of Rashi that the local inhabitants when observing the spies said to one another: "there are some ants in the vineyards" (Rashi on 13,33). Where did Rashi get this from? A further difficulty is the wording of Caleb interrupting the majority report in 13,30, when the Torah says: "Caleb silenced the people before Moses." What great wisdom did Caleb pronounce when he told the people that with the help of G–d they would be able to inherit the land? One did not have to be a member of the spy team to come up with this kind of elementary wisdom! Any righteous person could have pointed this out at once!