'Cup' in the Bible

The cup of blessing which we bless, is it not the communion of the blood of the Christ? The bread which we break, is it not the communion of the body of the Christ?

Ye cannot drink the Lord's cup, and the cup of demons: ye cannot partake of the Lord's table, and of the table of demons.

In like manner also the cup, after having supped, saying, This cup is the new covenant in my blood: this do, as often as ye shall drink it, in remembrance of me.

For as often as ye shall eat this bread, and drink the cup, ye announce the death of the Lord, until he come.

So that whosoever shall eat the bread, or drink the cup of the Lord, unworthily, shall be guilty in respect of the body and of the blood of the Lord.

But let a man prove himself, and thus eat of the bread, and drink of the cup.