We believe the All-holy Mystery of the Sacred Eucharist, which we have enumerated above, fourth in order, to be that which our Lord delivered in the night in which He gave Himself up for the life of the world. For taking bread, and blessing, He gave to His Holy Disciples and Apostles, saying: “Take, eat; This is My Body.” {Matthew 26:26} And taking the chalice, and giving thanks, He said: “Drink you all of It; This is My Blood, which for you is being poured out, for the remission of sins.” {Matthew 26:28} In the celebration of this we believe the Lord Jesus Christ to be present. He is not present typically, nor figuratively, nor by superabundant grace, as in the other Mysteries, nor by a bare presence, as some of the Fathers have said concerning Baptism, or by impanation, so that the Divinity of the Word is united to the set forth bread of the Eucharist hypostatically, as the followers of Luther most ignorantly and wretchedly suppose. But [he is present] truly and really, so that after the consecration of the bread and of the wine, the bread is transmuted, transubstantiated, converted and transformed into the true Body Itself of the Lord, Which was born in Bethlehem of the ever-Virgin, was baptized in the Jordan, suffered, was buried, rose again, was received up, sits at the right hand of the God and Father, and is to come again in the clouds of Heaven; and the wine is converted and transubstantiated into the true Blood Itself of the Lord, Which as He hung upon the Cross, was poured out for the life of the world. {John 6:51}
Further [we believe] that after the consecration of the bread and of the wine, there no longer remains the substance of the bread and of the wine, but the Body Itself and the Blood of the Lord, under the species and form of bread and wine; that is to say, under the accidents of the bread.