1)
What are the connotations of the word "Lehashmido" - as opposed to 'Lehargo'?
1.
Rashi: It implies 'to kill his children'. 1
2)
What is the word "Gam be'Ad Aharon" coming to include?
1.
Rashi: It includes Aharon's children, on whose behalf Moshe also Davened, two of whom Moshe's Tefilah saved.
3)
Why did Moshe's Tefilah not also save Nadav and Avihu?
1.
Pesikta Rabasi, 47: Because (sometimes) Tefilah achieves half of one's request. 1
1
This is - as the Midrash Rabah explains -'Tefilah As'sah Mechtzah'.
4)
Why did Moshe juxtapose his Tefilah on behalf of Aharon to the burning of the Eigel ha'Zahav?