Moses, under the inspiration of the Holy Spirit, described the importance of sacrifice in Leviticus 17:11,
“For the life of the flesh is in the blood, and I have given it to you on the altar to make atonement for your souls; for it is the blood by reason of the life that makes atonement.”
During the ten days of awe, we understand that we are marching towards the holiest day of the Jewish year, since the most important sacrifice of the year for the sins of the nation would take place on this day. This season of the year, initiated by the blowing of the shofar, is consummated with the Yom Kippur sacrifice.
However, the idea of sacrifice and blood atonement is not easy for us 21st-century people to understand. Why did the Lord, our God, require the blood of bulls, rams, and lambs as the price of readmission to fellowship with Him? Part of the answer is that the concept of sacrifice includes a cost to someone–a cost that reminds us that there is a price for sin. Disobedience to God degrades our relationship to God and one other.
But there is more to it, and this calls our hearts and minds to consider the biblical principle of substitution. Throughout the Hebrew Scriptures, and until the destruction of the Temple in the year 70AD, the law of substitutionary sacrifice was understood to restore a balance that the presence of sin had upset. The innocent substitute acts as the means through which “shalom” (peace or completeness) is reestablished between the sinner and God. Therefore, the primary purpose of sacrifice is to allow the estranged person to be drawn once more into unbroken fellowship with God.
However, traditional post-Temple Judaism has a problem, and understands that there is something missing! Since the destruction of the Temple, sacrifice could no longer be made because the one and true altar in the Temple was destroyed. How, then, do Jewish people find reconciliation with God?
The sages declare that in the days without the Temple, Judaism rested upon three pillars–prayer, repentance, and works of mercy. However, at the time, these three elements were thought to work in conjunction with the sacrifices. Today, because we do not have the Temple or an altar, these three are actually said to take the place of substitutionary sacrifice.
Yet, Jewish memory is not so easy to erase. That is why some observant Jews carry out an obscure ritual called kapporot (“covering”). For this ritual, the head of the household will take a live kosher hen or rooster and slaughter it. He will swing the body around his head three times while reciting, “This is my exchange, my substitute, my atonement; this rooster (or hen) shall go to its death, but I shall go to a good, long life and to peace.” The fowl, which is sometimes stuffed with coins, is given to the poor for food.
For followers of Yeshua, neither sacrifices in the Temple nor any other means of reconciliation are needed beyond that of Messiah, whose once-and-for-all sacrifice is more than sufficient to satisfy our need for atonement, provided we receive this priceless gift through our faith in Him. As the writer of the letter to the Hebrews reminds us,
But when Messiah appeared as a high priest of the good things to come, He entered through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation; and not through the blood of goats and calves, but through His own blood, He entered the holy place once for all, having obtained eternal redemption. For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled sanctify for the cleansing of the flesh, how much more will the blood of Christ, who through the eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God? For this reason He is the mediator of a new covenant, so that, since a death has taken place for the redemption of the transgressions that were committed under the first covenant, those who have been called may receive the promise of the eternal inheritance. (Hebrews 9:11-15)
I encourage you to meditate on the above passages of Scripture to help you again appreciate the wonder of God’s love in sending His Son to be our once-for-all atonement for sin. He did for us what we could never do for ourselves, and whether you are Jewish or part of some other religious faith, if you rely upon your own self-efforts to please God you will assuredly fail. We know this in the depth of our souls. We understand that we need our guilt lifted and it is only through the power of His sacrificial atonement that we can be forgiven and enjoy peace with God forever more.
 “Sacrifices and Offerings (Karbanot) | Jewish Virtual Library,” accessed September 18, 2014, http://www.jewishvirtuallibrary.org/jsource/Judaism/qorbanot.html.
 “The Custom of Kapparot in the Jewish Tradition | Jewish Virtual Library,” accessed September 18, 2014, https://www.jewishvirtuallibrary.org/jsource/Judaism/kapparot.html.