'This Cup' in the Bible

In the same way He took the cup also, after supping, saying, "This cup is the New Covenant in My blood; as often as you drink it, do this in remembrance of Me."

For "as often as you eat this bread and drink this cup, you show" the Lord's death until He shall come.

So that whoever shall eat this bread and drink this cup of the Lord unworthily, he will be guilty of the body and blood of the Lord.