The season of unleavened bread came, when the Passover lamb had to be sacrificed and Jesus sent Peter and John saying “Go and prepare the Passover for us, that we may eat.”
And when the time came, He sat down with the twelve apostles and said unto them: “I have desired to eat this Passover with you before I suffer.”
And He took the cup and after giving thanks said: “Take this and divide it among yourselves.” And He took bread and gave thanks and broke it and gave unto them saying, “This is my body which is given for you. Do this in remembrance of Me.”
In the same way He also took the cup after supper and said: “This cup is the New Covenant established by my blood. It is shed for you.” Luke 22:7-8,14-15,17,19-20