Gratias tibi ago, Domine, sancte Pater, omnipotens aeterne Deus, qui me peccatorem, indignum famulum tuum, nullis meis meritis, sed sola dignatione misericordiae tuae satiare dignatus es pretioso Corpore et Sanguine Filii tui, Domini nostri Iesu Christi. Et precor, ut haec sancta communio non sit mihi reatus ad poenam, sed intercessio salutaris ad veniam. Sit mihi armatura fidei et scutum bonae voluntatis. Sit vitiorum meorum evacuatio, concupiscentiae et libidinis exterminatio, caritatis et patientiae, humilitatis et oboedientiae omniumque virtutum augmentatio: contra insidias inimicorum omnium, tam visibilium quam invisibilium firma defensio; motuum meorum, tam carnalium quam spiritualium, perfecta quietatio: in te uno ac vero Deo firma adhaesio; atque finis mei felix consummatio. Et precor te, ut ad illud ineffabile convivium me peccatorem perducere digneris, ubi tu, cum Filio tuo et Spiritu Sancto, Sanctis tuis es lux vera, satietas plena, gaudium sempiternum, iucunditas consummata et felicitas perfecta. Per eundem Christum Dominum nostrum. Amen.
Thanksgiving of St. Thomas Aquinas after Holy Communion
'Let it be unto me an armour of faith and a shield of good purpose' — the thanksgiving the Missal places after Mass under Thomas's name, ending with the 'unspeakable feast' of heaven.
I render thanks to Thee, O Lord, Holy Father, Everlasting God, who hast vouchsafed, not for any merits of mine, but of Thy great mercy only, to feed me a sinner, Thine unworthy servant, with the precious Body and Blood of Thy Son, our Lord Jesus Christ; and I pray that this Holy Communion may not be for my judgment and condemnation, but for my pardon and salvation. Let it be unto me an armour of faith and a shield of good purpose, a riddance of all vices, and a rooting out of all evil desires; an increase of love and patience, of humility and obedience, and of all virtues; a firm defence against the wiles of all my enemies, visible and invisible; a perfect quieting of all my impulses, fleshly and spiritual; a cleaving unto Thee, the one true God; and a blessed consummation of my end when Thou dost call. And I pray that Thou wouldst vouchsafe to bring me a sinner to that unspeakable Feast where Thou, with Thy Son and Thy Holy Spirit, art to Thy holy ones true light, fulness of blessedness, everlasting joy, and perfect happiness. Through the same Christ our Lord. Amen.
After Holy Communion; by priests after Mass.
The companion to the prayer before Communion, and like it printed in the Roman Missal since 1570, among the priest's thanksgivings after Mass. Where the first prayer asked, this one gives thanks and then asks what Communion should become in the soul: armour and shield, riddance of vices, growth of every virtue, defence against enemies 'visible and invisible', quieting of every impulse, and at the end 'a blessed consummation'.
The English is that of the Manual of Prayers published by order of the Third Plenary Council of Baltimore, the official prayer book of American Catholics from 1888.
