For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that makes an atonement for the soul.
Read Chapter 17
George Leo Haydock
Life, (anima). The sensitive soul depends on the blood. The soul and the blood are often used in the same sense. (Deuteronomy xii. 23 and Psalm xxix. 10.) Sanguine quærendi reditus animâque litandum---Argolicâ. (Virgil, Æneid ii.) (Calmet)
In the case of the human person: first its body is created from the dust, and afterward the power of life is given to it, and this is the being of the soul. Accordingly Moses said about the beasts, “Its blood is its life.” But in the case of the human person its being is incorporeal and immortal and has a great superiority over the body, to the same extent as incorporeal form surpasses the corporeal.