Jesus took the cup – gave thanks – gave it to them
Jesus said – Drink ye all of it (How do you drink a cup?)
This is my blood (Is Christ’s blood represented in the cup OR in the contents of the cup (fruit of the vine)?)
I will not drink of this fruit of the vine. (Clearly Jesus was talking about the contents, not the container.)
Figure of speech
Metonymy = figure of speech in which one thing stands for another.
Examples:
Hired hand = hired a person (not just a hand)
500 head of cattle = 500 whole cows (not just heads)
Here the cup = the contents of the cup (Fruit of the vine)
Conclusion:
It is clear that Jesus intended to focus not on the container, but the contents.
If only one cup is to be used – How are Christians around the world to partake when only one cup is used?
If you say one cup in each church – you have the church using tens of thousands of cups around the world.
Study 1 Corinthians 10:16-17 – This passage mentions “one bread”. Must all Christians around the world partake of the same bread?
Study Luke 4:17 – This passage mentions the Bible as “the book” (singular). Do you object that there is more than one copy of the Bible?