This doctrine of Christ and of the apostles, from which the true faith of the primitive church was received, the apostles at first delivered orally, without writing, but later, not by any human counsel but by the will of God, they handed it on in the Scriptures.

And there is a difference between the essence of a Sacrament and its use.

Nevertheless the meaning is not that the blessed bread which is divided, which is offered, and which the apostles received from the hand of Christ was not the body of Christ but becomes the body of Christ when the eating of it is begun.

Martin Chemnitz Quotes