Read Hebrews 9 today.

This chapter contrasts the difference between the earthly temple and the heavenly one. One of the common features is the requirement of the shedding of blood for the forgiveness of sin. I know many people who are offended by this requirement. They ask why God would require that something would have to die for can to be forgiven.
That is a very reasonable question. Why is the shedding of blood necessary? Why is death the penalty for sin? It is because God takes sin seriously. God takes sin far more seriously than we do. One dies in our place, so we might live.
If you took sin seriously (especially your own), what would your response be to the provision God has provided through Christ for your forgiveness and reconciliation?
Hebrews 9:18-22 NLT
That is why even the first covenant was put into effect with the blood of an animal. [19] For after Moses had read each of God’s commandments to all the people, he took the blood of calves and goats, along with water, and sprinkled both the book of God’s law and all the people, using hyssop branches and scarlet wool. [20] Then he said, “This blood confirms the covenant God has made with you.” [21] And in the same way, he sprinkled blood on the Tabernacle and on everything used for worship. [22] In fact, according to the law of Moses, nearly everything was purified with blood. For without the shedding of blood, there is no forgiveness.