The Words of Institution are spoken over the bread and wine to prepare us to partake of Christ’s body and blood in his Holy Meal. They remind us of what Jesus did and said at the last supper.
Our Lord Jesus Christ, on the night when he was betrayed, took bread, and when he had given thanks, he broke it and gave it to his disciples, and said, Take and eat; this is † my body, which is given for you. Do this in remembrance of me.
In the same way he took the cup, after the supper, and when he had given thanks, he gave it to them, and said, Drink of it, all of you; this is † my blood of the new covenant, which is shed for you for the forgiveness of sins. Do this as often as you drink it, in remembrance of me.
Christian Worship & Celebrations 