Purifications or Baptisms: Means Used for Water Mixed with Blood
Source: TTT
Exodus 24:5–8
Then he sent out some young men of Israel, and they offered burnt offerings and sacrificed young bulls as peace offerings to the LORD. / Moses took half of the blood and put it in bowls, and the other half he sprinkled on the altar. / Then he took the Book of the Covenant and read it to the people, who replied, “All that the LORD has spoken we will do, and we will be obedient.”
Hebrews 9:19
For when Moses had proclaimed every commandment of the law to all the people, he took the blood of calves and goats, along with water, scarlet wool, and hyssop, and sprinkled the scroll and all the people,