Hebrews 9:18-20

18That is why even the first covenant was put into effect with the blood of an animal.

19For 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.

20Then he said, “This blood confirms the covenant God has made with you.”