But before the Mitzvah of Milah, Avraham only drew down from the inner spiritual dimension from Above, from Hishtalshelus, therefore there was still no revelation in the outer physical aspect act of a mitzvah, since Avraham’s fulfillment of the entire Torah was only on the level of the inner spiritual dimension.
And when he was 99 years old, the physical mitzvah of Milah was given to him as a gift, in order that Yitzchak be born to him, and then from Yitzchak would come Yaakov, the ‘perfect one,’ and then his descendants would accept the Torah including the outward aspect of the mitzvos in actual deed.
Therefore, Avraham did not receive the Torah, because he also fathered Yishmael.
Even though the process of bringing Hashem’s Light into the physical dimension started with Avraham fulfilling the Mitzvah of Milah, this process took many stages. Only after Yitzchok, Yaakov, and slavery in Mitzraim, could the Jewish People receive the complete power of the Torah and Mitzvos as they affect the physical world.
The fact the Yishmael, who was wicked for most of his life, came from Avraham, shows that Avraham himself contained (on a level of hidden potential) an element of impurity that had yet to be refined. Similarly, the fact that Yitzchok had a son Eisav who was wicked shows that he also contained some hidden potential for impurity. This hidden element of impurity came from Avraham’s pre-Milah state. Only Yaakov, who was born to Yitzchok after his own Milah on the 8th day of his life, was able to have 12 children who were all righteous.
In order for the Torah to be given to them, however, another process was required. The slavery in Mitzraim, which is something so terrible that it defies all levels of spiritual understanding of Hishtalshelus, was able to connect the Jews to a level of Hashem that is above and beyond the logic and understanding of Hishtalshelus. This is needed in order to be able to bring down Hashem’s Light all the way into the physical Mitzvos.
Only after undergoing the Milah and bearing Yitzchak, then it was possible for Yitzchok to bear Yaakov, the ‘perfect one,’ whose descendants would accept the Torah with physical mitzvos – which contains an illumination from the level of Iggulim-Circles – including even outward expressions, for from the perspective of Iggulim-Circles, which are above Hishtalshelus, spirituality Above and physicality below are all one.
