Why did the sacrificial system require a blood sacrifice?

The whole of the Old Testament, every book, points toward the Great Sacrifice that was to come—that of Jesus’ sacrificial giving of His own life on our behalf. Leviticus 17:11 is the Old Testament’s central statement about the significance of blood in the sacrificial system. God, speaking to Moses, declares: “For the life of a creature is in the blood, and I have given it to you to make atonement for yourselves on the altar; it is the blood that makes atonement for one’s life.”

A “sacrifice” is defined as the offering up of something precious for a cause or a reason. Making atonement is satisfying someone or something for an offense committed. The Leviticus verse can be read more clearly now: God said, “I have given it to you (the creature’s life, which is in its blood) to make atonement for yourselves (covering the offense you have committed against Me).” In other words, those who are covered by the blood sacrifice are set free from the consequences of sin.

Of course, the Israelites did not know of Jesus per se, or how He would die on their behalf and then rise again, but they did believe God would be sending them a Savior. All of the many, many blood sacrifices seen throughout the Old Testament were foreshadowing the true, once-for-all-time sacrifice to come so that the Israelites would never forget that, without the blood, there is no forgiveness. This shedding of blood is a substitutionary act. Therefore, the last clause of Leviticus 17:11 could be read either “the blood ‘makes atonement’ at the cost of the life” (i.e., the animal’s life) or “makes atonement in the place of the life” (i.e., the sinner’s life, with Jesus Christ being the One giving life through His shed blood).

Hebrews 9:11-18 confirms the symbolism of blood as life and applies Leviticus 17:11 to the sacrifice of the Lord Jesus Christ. Verse 12 states clearly that the Old Testament blood sacrifices were temporary and only atoned for sin partially and for a short time, hence the need to repeat the sacrifices yearly. But when Christ entered the Most Holy Place, He did so to offer His own blood once for all time, making future sacrifices unnecessary. This is what Jesus meant by His dying words on the cross: “It is finished” (John 19:30). Never again would the blood of bulls and goats cleanse men from their sin. Only by accepting Jesus’ blood, shed on the cross for the remission of sins, can we stand before God covered in the righteousness of Christ (2 Corinthians 5:21).

Why did God require animal sacrifices in the Old Testament?

God required animal sacrifices to provide a temporary covering of sins and to foreshadow the perfect and complete sacrifice of Jesus Christ (Leviticus 4:35, 5:10). Animal sacrifice is an important theme found throughout Scripture because “without the shedding of blood there is no forgiveness” (Hebrews 9:22). When Adam and Eve sinned, animals were killed by God to provide clothing for them (Genesis 3:21). Cain and Abel brought sacrifices to the Lord. Cain’s was unacceptable because he brought fruit, while Abel’s was acceptable because it was the “firstborn of his flock” (Genesis 4:4-5). After the flood receded, Noah sacrificed animals to God (Genesis 8:20-21).

God commanded the nation of Israel to perform numerous sacrifices according to certain procedures prescribed by God. First, the animal had to be spotless. Second, the person offering the sacrifice had to identify with the animal. Third, the person offering the animal had to inflict death upon it. When done in faith, this sacrifice provided a temporary covering of sins. Another sacrifice called for on the Day of Atonement, described in Leviticus 16, demonstrates forgiveness and the removal of sin. The high priest was to take two male goats for a sin offering. One of the goats was sacrificed as a sin offering for the people of Israel (Leviticus 16:15), while the other goat was released into the wilderness (Leviticus 16:20-22). The sin offering provided forgiveness, while the other goat provided the removal of sin.

Why, then, do we no longer offer animal sacrifices today? Animal sacrifices have ended because Jesus Christ was the ultimate and perfect sacrifice. John the Baptist recognized this when he saw Jesus coming to be baptized and said, “Look, the lamb of God who takes away the sin of the world!” (John 1:29). You may be asking yourself, why animals? What did they do wrong? That is the point—since the animals did no wrong, they died in place of the one performing the sacrifice. Jesus Christ also did no wrong but willingly gave Himself to die for the sins of mankind (1 Timothy 2:6). Jesus Christ took our sin upon Himself and died in our place. As 2 Corinthians 5:21 says, “God made him [Jesus] who had no sin to be sin for us, so that in him we might become the righteousness of God.” Through faith in what Jesus Christ accomplished on the cross, we can receive forgiveness.

In summation, animal sacrifices were commanded by God so that the individual could experience forgiveness of sin. The animal served as a substitute—that is, the animal died in place of the sinner, but only temporarily, which is why the sacrifices needed to be offered over and over. Animal sacrifices have stopped with Jesus Christ. Jesus Christ was the ultimate sacrificial substitute once for all time (Hebrews 7:27) and is now the only mediator between God and humanity (1 Timothy 2:5). Animal sacrifices foreshadowed Christ’s sacrifice on our behalf. The only basis on which an animal sacrifice could provide forgiveness of sins is Christ who would sacrifice Himself for our sins, providing the forgiveness that animal sacrifices could only illustrate and foreshadow.