quote:
Originally posted by Metatron:
South american headhunters believe that by eating the heart of a slain foe they gain his courage.
Some christian sects believe that by eating the blood and body of christ they gain his holiness.
I can't detect a difference.
I think what you are referring to here Metatron is transsubstantiation - a theory accepted by Rome in 1215 in which they believe that the elements (the bread and wine) actually transform into the the body of Christ. My knowledge of which Christian sects you might be referring to is limited, but I do know that this is a teaching of at least the Roman Catholic Church which I have noticed you have mentioned before. It is not supported by Scripture.
Jesus served the elements to his disciples saying, "This do in rememberance of Me." His purpose? To illustrate that He is the true substitute for the Passover Lamb, but also as a sacrifice in accordance with other OT analogies.
In the sacrificial ritual the portion of peace offering not consumed by fire and thus not offered to God as his food (cf. Lev. 3:1-11; Numb. 28:2) was eaten by priests and people (Lev. 19:5-6; 1 Sam. 9:13) in an act of fellowship with the altar and the sacrifice (Exod. 24:1-11; Duet. 27:7; cf. Numb 25:1-5; 1 Cor. 10). Jesus in giving the elements thus gave to his disciples a sign of their own fellowship and participation in the event of his sacrificial death. Evangelical Dictionary of Theology
When believers celebrate what is commonly known as Communion (or the Lord's Supper) it is done in rememberance of what He has done, and in awaiting His return not to gain His holiness.