1 Corinthians 11:27
Therefore whoever eats this bread or drinks the Lord's cup in a way unworthy of the Lord will be guilty of the body and the blood of the Lord.
John 6:51
I am the living bread which came down out of heaven. If anyone eats of this bread, he will live forever. Yes, the bread which I will give for the life of the world is my flesh."
Numbers 9:10
"Say to the children of Israel, 'If any man of you or of your generations is unclean by reason of a dead body, or is on a journey far away, he shall still keep the Passover to Yahweh.
Numbers 9:13
But the man who is clean, and is not on a journey, and fails to keep the Passover, that soul shall be cut off from his people. Because he didn't offer the offering of Yahweh in its appointed season, that man shall bear his sin.
Leviticus 10:1-3
Nadab and Abihu, the sons of Aaron, each took his censer, and put fire in it, and laid incense on it, and offered strange fire before Yahweh, which he had not commanded them.
2 Chronicles 30:18-20
For a multitude of the people, even many of Ephraim and Manasseh, Issachar and Zebulun, had not cleansed themselves, yet they ate the Passover otherwise than it is written. For Hezekiah had prayed for them, saying, "May the good Yahweh pardon everyone
Matthew 22:11
But when the king came in to see the guests, he saw there a man who didn't have on wedding clothing,
John 6:63-64
It is the spirit who gives life. The flesh profits nothing. The words that I speak to you are spirit, and are life.
John 13:18-27
I don't speak concerning all of you. I know whom I have chosen. But that the Scripture may be fulfilled, 'He who eats bread with me has lifted up his heel against me.'
1 Corinthians 10:21
You can't both drink the cup of the Lord and the cup of demons. You can't both partake of the table of the Lord, and of the table of demons.
Hebrews 10:29
How much worse punishment, do you think, will he be judged worthy of, who has trodden under foot the Son of God, and has counted the blood of the covenant with which he was sanctified an unholy thing, and has insulted the Spirit of grace?