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The History of the Mass.
The Introite.
CElestinus Pope gave the first Introite, as Plati∣na and Sigebertus writ••.
The Psalm Judica me Deus &c.
The Priest prepares himself to his Mass, first with the Psalm Judica me Deus, & discerne causam meam &c. which was ordained by the said Ce∣lestinus.
And where they ascr••be to Sa••nt Ambrose the two Prayers which he used in the preparation to the Mass, and be added to the Books of Ambrose, E∣rasmus judgeth the same to be none of his, and that rightly, as it seemeth; for therein are con∣tained Errors not els•• to be found in the Books of Ambrose, both in giving ••doration to the bread of the Sacrament, and making invocation to the Saints, namely to blessed Mary as in the second Prayer where he saith, ut efficax haec mea sit depr••∣catio, beatae Mariae Virgin•• suffragia peto▪ &c. that is, And that this my Prayer may be of Efficacy. I desire the suffr••ge and intercession of blessed Mary the Virgin &c. whereby it may appear that learned Ambrose was not the Author of such an Error.
Chrysostom in the XI homily upon the Gospel of Mathew saith, that in his time (and afore hi•• time) the use was to sing whole Psalms till they were en∣tred and assembled together, and so belike Celestinu•• borrowed this custom of the Greeks, and brought it into the Latin Church as R••pertus w••ite••h.
Gregory the Great as some w••it••, called a Synod at Rome about the Year of our Lord 594 in which Synod he appointed that the In••••oit of the Mass should be taken out of some Psalm.