Contradiction with Exodus 24:3-8
In this account, Moses uses half of the blood on the altar and the other half for sprinkling on the people, while Hebrews 9:19 describes sprinkling with both water and scarlet wool and hyssop, which are not mentioned in Exodus.
Exodus 24:3-8: And Moses came and told the people all the words of the LORD, and all the judgments: and all the people answered with one voice, and said, All the words which the LORD hath said will we do.
Contradiction with Leviticus 14:6-7
This describes the use of two birds, cedar wood, scarlet, and hyssop in purification rites, which differs from Hebrews 9:19's description of sprinkling blood in covenant ceremonies.
Leviticus 14:6-7: As for the living bird, he shall take it, and the cedar wood, and the scarlet, and the hyssop, and shall dip them and the living bird in the blood of the bird [that was] killed over the running water:
Contradiction with Numbers 19:6
Here, cedar wood, hyssop, and scarlet are used in the preparation of the water of purification, which doesn't align with the description of Moses' actions in Hebrews 9:19.
Numbers 19:6: And the priest shall take cedar wood, and hyssop, and scarlet, and cast [it] into the midst of the burning of the heifer.
Contradiction with Hebrews 10:4
Suggests that it is impossible for the blood of bulls and goats to take away sins, contradicting the Hebrews 9:19 implication that such practices were efficacious for purification.
Hebrews 10:4: For [it is] not possible that the blood of bulls and of goats should take away sins.
Contradiction with Jeremiah 31:31-34
Speaks of a new covenant unlike the one made during the Exodus, which Hebrews 9:19 describes, emphasizing a shift from past ceremonial practices.
Jeremiah 31:31-34: Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah: