From my collection of: Biblical Manipulations
The Hebrew Scriptures forbids eating blood in unqualified terms! Below I list some of the verses illustrating this command. With this in mind, why would Christians celebrate drinking the blood and eating the body of their sacrificed god? Robert Oerter has two posts (I & II) eloquently proposing why Christians added this fictional story later in the development of the Christian myth. Oerter is a Prof. of Physics at George Mason University and excellent Atheist blogger.
Only you shall not eat flesh with its life, that is, its blood.
— Gen 9:4 (RSV)
You must not eat any blood whatever, either of bird or of animal, in any of your settlements. Any one of you who eats any blood shall be cut off from your kin.
— Lev 7:26-27 (RSV)
If anyone of the house of Israel or of the aliens who reside among them eats any blood, I will set my face against that person who eats blood, and will cut that person off from the people. 11For the life of the flesh is in the blood; and I have given it to you for making atonement for your lives on the altar; for, as life, it is the blood that makes atonement. 12Therefore I have said to the people of Israel: No person among you shall eat blood, nor shall any alien who resides among you eat blood.
— Lev 17:10-12 (RSV)
You shall not eat anything with its blood. You shall not practice augury or witchcraft.
— Lev 19:26 (RSV)
The blood, however, you must not eat; you shall pour it out on the ground like water.
— Deut 12:16 (RSV)
Only be sure that you do not eat the blood; for the blood is the life, and you shall not eat the life with the meat. 24Do not eat it; you shall pour it out on the ground like water. 25Do not eat it, so that all may go well with you and your children after you, because you do what is right in the sight of the Lord.
— Deut 12: 23-25 (RSV)
Its blood, however, you must not eat; you shall pour it out on the ground like water.
— Deut 15:23 (RSV)
It shall be a perpetual statute throughout your generations, in all your settlements: you must not eat any fat or any blood.
— Lev 3:17 (RSV)