"And he took a cup, and when he had given thanks, he gave to them: and they all drank of it. And he said unto them, ‘This is my blood of the covenant, which is poured out for many.’" Mark 14:23-24

"And he took a cup, and gave thanks, and gave to them, saying, ‘Drink ye all of it; for this is my blood of the covenant, which is poured out for many unto remission of sins.’" Matt 26:27-28

The translators of the liturgy did not have the right to change Jesus' Word "many" to "all".