Since the Torah is derived from the World of Tikkun of Atzilus.
As is written in Eitz Chaim (11:2), that in Tikkun, the Lights were lessened,
The Lights of Tikkun in Atzilus were less overpowering than the Lights of Tohu. These Lights of Atzilus were limited to be able to adapt to the limitations of the “Keilim-Vessels” of Atzilus.
Thus, the Torah that is derived from them deals with particularities and limitations (i.e., with precise details and intricacies).
Therefore, the Torah explicitly discussed the order of elevation to Tikkun, with all of its precise laws, which govern the Korbonos-Sacrifices:
That they be from kosher animals, and from only three specific types of animals (cows, sheep, and goats), and that they be slaughtered prior to being offered, and that there are many details that could invalidate a Korbon.
Similarly, regarding how and what the offering must entail, there are many specifics, since the entire Torah operates in this manner, in limits and parameters.
It is derived from the level of Tikkun, where the lights are condensed within the vessels.
Therefore, the Torah is particular in many different limits and precise laws.
However, Yaakov was causing an elevation to the Encompassing Light of Tohu, which is a great and infinite light that cannot be contained in vessels and thus remains encompassing.
