Mark 14:23
Then he took a cup, and when he had given thanks, he gave it to them, and they all drank from it — the cup follows the bread. He gave thanks (eucharistēsas) — the Greek gives us the name Eucharist for this meal. They all drank from it: the sharing of the cup is the participation in the covenant being established. The all communicates that even Judas, who may still be present (the Gospel narratives differ on when he departed), drank from the cup.