## he took the cup ##

AT: "he picked up a cup containing wine". (See: [[rc://en/ta/man/translate/figs-metonymy]])

## Do this as often as you drink it, ##

"Drink from this cup, and as often as you drink from it,"

## you proclaim the Lord's death ##

"you are teaching about the reality of the Lord's death."  The reference to Jesus' death refers more generally to his crucifixion and resurrection.

## until he comes ##

AT: "until Jesus comes back to the earth."