(condensed from Ein Ayah, Shabbat 9:93)

Gemara: When Moshe went up to the Heavens, the angels said to Hashem: “What is one who was born by a woman doing among us?” Hashem answered: “He has come to accept the Torah.”

Ein Ayah: Angels are full of spiritual life, of purity, and proper intentions for their actions, which they do quickly and accurately. They were thus shocked to see a creation made out of physical matters, who is the recipient of actions. How could Moshe come from such a lowly place to an equal standing with the holders of important roles in the Heavens?

Indeed Moshe used his brilliantly holy soul to go up to the Heavens and used his spiritual content to make a strong impression on the angels. They wondered how light and darkness could join together. How could a mere recipient – someone born to a woman – stand among those who act regularly and impressively throughout the universe?

From the light of the King of the Universe’s face came a lofty answer. Those who specialize in actions and spreading light are not capable of receiving the Torah and being impacted by that which is above and beyond them. The angels are static in their level and thrive spiritually only within their natural place. It is actually special to be open to accept and be motivated from within, as those who are born to women can. They can go well beyond their community and take on the load of great sanctity. Thus, it was appropriate that Moshe came to accept the Torah.