To summarize, the significance of concluding with the greatness of the Moshe is to teach us that the Torah is eternal. With this idea we may gain new insight into a popular song that is sung on Simchas Torah . First, let us note the source of this song. We may ask here the same question as above. We only find Korach rebelling against the leadership of Moshe not his Torah.
Truth is something that survives the test of time.
Something that changes over the course of time cannot be classified as true. Truth, for our purposes is a synonym of eternal. Next, let us analyze the rebellion of Korach. Korach complained that is was not proper for Moshe to single-handedly lead the Nation. Korach claimed contrary to our posuk that there are others that are just as great, if not even greater than Moshe.