You may not eat the life with the flesh, as they literally do in China, and in Catholic Mass everywhere

But flesh with the life thereof, which is the blood thereof, shall ye not eat.

-- Genesis 9:4

For it is the life of all flesh; the blood of it is for the life thereof: therefore I said unto the children of Israel, Ye shall eat the blood of no manner of flesh: for the life of all flesh is the blood thereof: whosoever eateth it shall be cut off.

-- Leviticus 17:14

 

Only be sure that thou eat not the blood: for the blood is the life; and thou mayest not eat the life with the flesh.

-- Deuteronomy 12:23

This Johannine idea is therefore utterly inimical to the spirit of the Old Testament food law:

Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you.

-- John 6:53