Moshe achieved a tikun for the neshamah of Noach, who did not do as he did. 

Nechoshet VeAtath

Noach Shet and You

Moshe was a gilgul of Noach, who was a gilgul of Shet.

HKB”H does not mention Moshe’s name in this parsha, because of his act of self-sacrifice, praying on behalf of his generation:

Thus, he rectified the neshamah of Noach, as alluded to by the word Mecheni

As pointed out, the word shemen is an acronym for the three gilgulim—which were purified completely in the person of Moshe.

Olive oil, that is extracted from the olive with great effort, alludes to Torah-study that a person does not keep to himself; he releases it and shares it with others. Therefore, it is capable of restoring Torah that has been forgotten for seventy years.

This, in fact, accurately describes the difference between Noach and his gilgul—Moshe Rabeinu. Even though Noach was a tzaddik; nevertheless, he resembled the olive that keeps its oil trapped inside. He did not make an effort to venture out and teach his generation the ways of the Torah and its mitzvot. In contrast, Moshe Rabeinu resembled olive oil; he taught Torah to all of Yisrael. Thus, in his gilgul, he rectified Noach’s flaw.