Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 58. Next follow the words: Of the new testament. These have been added that we might understand the blood of Christ the Lord to be given not under a figure, as was done in the Old Law, of which we read in the Epistle to the Hebrews that without blood a testament is not dedicated; but to be given to men in truth and in reality, as becomes the New Testament. Hence the Apostle says: Christ therefore is the mediator of the new testament, that by means of his death, they who are called may receive the promise of eternal inheritance.