'This Cup' in the Bible

in the same manner he took the cup, after supper, and said, "this cup is the new covenant in my blood: this do ye, as oft as ye drink it, in remembrance of me."

As often then as ye eat this bread, and drink this cup, ye make a declaration of the Lord's death till he come.

so that whosoever eats this bread, and drinks this cup without respect to the Lord, does make a criminal use of the body and blood of the Lord.