Apostolic Constitution of Pope Paul VI promulgating the new Roman Missal. The most significant features of this new missal are the addition of three new canons for the Mass, and the modification of the ritual. However, in each canon the Pope decreed that there be the same formula of consecration as follows: "We want the words to be pronounced thus: over the bread, "Accipite et manducate ex hoc omnes; Hoc est enim corpus meum, quod pro vobis tradetur'; and over the chalice, 'Hic est enim calix sanguinis mei, novi et aeterni testamenti, qui pro vobis et pro multis effundetur in remissionem peccatorum. Hoc facite in meam commemorationem.' The words 'Mysterium fidei,' taken from the context of the words of Christ the Lord, and said by the priest, serve as in introduction to the acclamation of the faithful" (April 3, 1969). Two years before Missale Romanum, Pope Paul VI had authorized the use of the vernacular language "even in the Canon of the Mass" (May 4, 1967).