'Drink the Cup' in the Bible

But Jesus, answering, said, "Ye know not what ye are asking. Are ye able to drink the cup that I am about to drink?" They say to Him, "We are able."

But Jesus said to them, "Ye know not what ye are asking. Are ye able to drink the cup that I drink, or to be immersed with the immersion that I am immersed with?"

Ye cannot drink the cup of the Lord and the cup of demons; ye cannot partake of the table of the Lord and the table of demons.

for, as often as ye eat this bread, and drink the cup, ye proclaim the Lord's death, till He come.