Leviticus 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.
Genesis 17:14
Any uncircumcised male who has not been circumcised in the flesh of his foreskin will be cut off from his people -- he has failed to carry out my requirement."
Leviticus 15:2-33
"Speak to the Israelites and tell them, 'When any man has a discharge from his body, his discharge is unclean.
Leviticus 22:3-7
Say to them, 'Throughout your generations, if any man from all your descendants approaches the holy offerings which the Israelites consecrate to the Lord while he is impure, that person must be cut off from before me. I am the Lord.
1 Corinthians 11:28
A person should examine himself first, and in this way let him eat the bread and drink of the cup.