And Moshe took the blood, and sprinkled it on the people, and said, Behold the blood of the covenant, which YY hath made with you concerning all these words.
After the same manner also he took the cup, when he had supped, saying, This cup is the New Covenant in my blood: this do ye, as oft as ye drink it, in remembrance of me.
The cup of blessing which we bless, is it not the communion of the blood of Moshiach? The matzah which we break, is it not the communion of the body of Moshiach?