Matthew 26:26
Now as they were eating, Jesus took bread, and after blessing it broke it and gave it to the disciples, and said: take, eat; this is my body. The institution of the eucharist during the Passover meal: Jesus takes bread, blesses, breaks, and gives — the same four eucharistic actions as the two feeding miracles (Matthew 14:19 and 15:36). The this is my body over the Passover bread transforms the Passover's unleavened bread into the sign of Jesus' broken body.