They are also required to keep a feast of unleavened bread, “as perpetual institution” (Exodus 12:17). In the Eucharist, all these elements are combined to make up Mass as our keeping of the ...

The sacrificial character of the Eucharist is manifested in the very words of institution: 'This is my body which is given for you' and 'This cup which is poured out for you is the New Covenant in ...