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2Samuel said:
The church today finds the Lord's Supper to be solemn partly because of the words of institution: "do this in remembrance of me".

I have often wondered why we have adopted the abbreviated form of the passover that we celebrate as communion. My assumption is that Jesus was referring to the complete Passover meal when he said, "do this." Taking out of context the symbols representing the blood and body of the Messiah,is almost like reading the Cliff Notes version of a classic; the concept is there, but the power of the original is lost.

Perhaps because what was being done isn't the seder meal which has its roots into the Old Covenant but an entirely new meal inaugurating the New Covenant.

Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo