Hebrews 9:18-20

18That is why not even the first covenant was inaugurated without blood.

19For when every commandment had been spoken by Moses to all the people according to the Torah, he took the blood of the calves and goats, with water and scarlet wool and hyssop, and he sprinkled both the book itself and all the people.

20He said, “This is the blood of the covenant which God commanded you.”