Today’s Mass varies somewhat from its Roman counterpart; only the variances will be mentioned.
The Introit opens with Tob 12:6, but the versicle is Dan 3 Benedicamus Patrem et Filium cum Sancto Spiritu: laudemus et superexaltemus is saecula (Let us bless the Father and the Son with the Holy Spirit: let us praise Him and exalt Him above all others forever). Then Follows Tob 12:6, Gloria Patri, and Tob 12:6 again.
The Epistle reading is not the pericope from Romans, but rather Apoc 4:1-10.
The versicle of the Gradual is not Dan 5:56, but a gloss on Tob 12:6 – Benedicite Deum caeli: quia fecit nobiscum misericordiam suam (Bless ye the God of heaven: whom hath made his mercy to abide with us). In place of the Gradual can be said a verse from the Athanasian Creed followed by a verse which seems to contain fragments taken from a sequence of the Holy Trinity –Benedicta semper sancta sit Trinitas
Qualis Pater, talis Filius, talis Spiritus Sanctus.
Such as the Father is; such is the Son; such is the Holy Ghost.
O adoranda Trinitas, o veneranda Unitas, o perfecta Deitas, o claritas Luminis.
Oh adored Trinity, o venerable Unity, o perfect God-head, o brightness of Light.
The Gospel Jesus’ encounter with Nicodemus in John 3:1-15.
The Last Gospel is that of the Mass of Dominica Prima post Pentecosten, Luke 16:19-31.