The Torah, “Leviticus,” 1:9: …but its innards and its legs, he shall wash with water. Then the Cohen shall cause to [go up in] smoke all [of the animal] on the altar, as a burnt-offering, a fire offering, [with] a pleasing fragrance to the Lord.
A pleasing fragrance to the Lord are the parts of our corporeal desire that we cannot use for the sake of the Creator. We raise them to the next level in the form of fire and smoke as if we burn them. At the same time, we don’t enjoy them but delight the Creator. The word “fragrance” refers to the attribute of Ruach.
All the desires that were previously used egoistically have to become kosher, which means to be worthy of bestowal in order to use them for the benefit of others. So there is no such matter in our world (matter is a desire on the level of the still, vegetative, animate, and speaking nature) that can be used directly for bestowal without being changed by certain actions first.
The whole Torah speaks only about this. So bringing offerings, the Tabernacle, the Holy Ark (where the Torah is kept), the curtains, the Menorah, and all the other objects symbolize a person’s inner attributes.
The Torah describes how these objects are prepared, of what they are made, who should prepare them, and in what conditions. For example, during the construction of the Temple, cedars of Lebanon were used. They brought copper from a certain place and from another they brought wool from special sheep. All this indicates that a person has to choose these parts of his desires and use them in this particular way as he corrects them in order to bestow.
From KabTV’s “Secrets of the Eternal Book” 11/13/13