레위기 10:3의 Musar

וידום אהרן . Aaron was rewarded for his silence in 10,3 when G–d spoke to him exclusively in 10,9. We are to learn from this that we must accept with good grace what appear to be G–d's strictures and afflictions.

2. The second is when a man suffers a great loss —or his children die — and he declares his faith in the Justice of God, Blessed be He, and receives His Judgment with love, as it is said: "And Aaron was silent" (Lev. 10:3). And this certainly teaches what humble and modest conduct is.

Acquisiton of מעשים טובים, may not be something independent of the performance of so called מצות, rather it may be the manner in which the commandments are performed. There are 5 levels of performing the various commandments, which may elevate such performance into מעשים טובים, "good deeds." The five people mentioned in our Midrash may personify those five levels of "mitzvah performance." 1) "Ordinary הדור מצוה," i.e. Miriam's allowing the children to live; 1b) the additional dimension she displayed by financing the survival of these children herself. This made Miriam a paragon of the virtue of הדור מצוה, a level described by G–d elsewhere as בקרובי אקדש, "I will be sanctified through those that are close to Me" (when the sons of Aaron died, Leviticus 10,2-3).