Leviticus 7:20-21

7:20 The person who eats meat from the peace offering sacrifice which belongs to the Lord while his uncleanness persists will be cut off from his people. 7:21 When a person touches anything unclean (whether human uncleanness, or an unclean animal, or an unclean detestable creature) and eats some of the meat of the peace offering sacrifice which belongs to the Lord, that person will be cut off from his people.’”

Leviticus 7:25

7:25 If anyone eats fat from the animal from which he presents a gift to the Lord, that person will be cut off from his people.

Hebrews 10:29

10:29 How much greater punishment do you think that person deserves who has contempt for the Son of God, and profanes the blood of the covenant that made him holy, and insults the Spirit of grace?