Hebrews 9:18-24

That is why even the first covenant was inaugurated with blood. For when every command had been proclaimed by Moses to all the people according to the law, he took the blood of calves and goats, along with water, scarlet wool, and hyssop, and sprinkled the scroll itself and all the people, saying, This is the blood of the covenant that God has ordained for you. In the same way, he sprinkled the tabernacle and all the articles of worship with blood. According to the law almost everything is purified with blood, and without the shedding of blood there is no forgiveness. Therefore, it was necessary for the copies of the things in the heavens to be purified with these sacrifices, but the heavenly things themselves to be purified with better sacrifices than these. For Christ did not enter a sanctuary made with hands (only a model of the true one) but into heaven itself, so that he might now appear in the presence of God for us.