Leviticus 4:30

4:30 Then the priest must take some of its blood with his finger and put it on the horns of the altar of burnt offering, and he must pour out all the rest of its blood at the base of the altar.

Leviticus 17:11

17:11 for the life of every living thing ¹  is in the blood. ²  So I myself have assigned it to you ³  on the altar to make atonement for your lives, for the blood makes atonement by means of the life. ⁴ 

[17:11]  ¹ tn Heb “the life of the flesh.” Here “flesh” stands for “every living thing,” that is, all creatures (cf. NIV, NRSV, NLT “every creature”; CEV “every living creature.”

[17:11]  ² tn Heb “for the soul/life (נֶפֶשׁ, nefesh) of the flesh, it is in the blood” (cf. the note of v. 10 above and v. 14 below). Although most modern English versions begin a new sentence in v. 11, “For the life of the flesh is in the blood” (see, e.g., NJPS, NASB, NIV, NRSV), the כִּי (ki, “for, because”) at the beginning of the verse suggests continuation from v. 10, as the rendering here indicates (see, e.g., NEB, NLT; J. E. Hartley, Leviticus [WBC], 261; and G. J. Wenham, Leviticus [NICOT], 239).

[17:11]  ³ tn Heb “And I myself have given it to you.”

[17:11]  ⁴ tn Heb “for the blood, it by (בְּ, bet preposition, “in”] the life makes atonement.” The interpretation of the preposition is pivotal here. Some scholars have argued that it is a bet of exchange; that is, “the blood makes atonement in exchange for the life [of the slaughtered animal]” (see R. E. Averbeck, NIDOTTE 2:694-95, 697 for analysis and criticism of this view). It is more likely that, as in the previous clause (“your lives”), “life/soul” (נֶפֶשׁ, nefesh) here refers to the person who makes the offering, not the animal offered. The blood of the animal makes atonement for the person who offers it either “by means of” (instrumental bet) the “life/soul” of the animal, which it symbolizes or embodies (the meaning of the translation given here); or perhaps the blood of the animal functions as “the price” (bet of price) for ransoming the “life/soul” of the person.