Below are the propers prayers for Trinity Sunday. A PDF version can be found here: Propers for Trinity Sunday.
INTROIT (Tobias 12. 6)
BLESSED be the holy Trinity, and undivided Unity: we will give glory to Him, because He hath shown His mercy to us. Ps. 8. 2. O Lord, our Lord, how wonderful is Thy Name in all the earth! ℣. Glory be to the Father, and to the Son, and to the Holy Ghost. As it was in the beginning, is now, and ever shall be, world without end. ℟. Amen. — Blessed be the holy Trinity …
O ALMIGHTY and everlasting God, who hast enabled Thy servants, in confessing the true Faith, to acknowledge the glory of the eternal Trinity, and in the power of Majesty to adore its Unity: we beseech Thee, that by steadfastness in the same Faith, we may ever be defended against all adversity. Through our Lord Jesus Christ, Thy Son…
EPISTLE From Blessed Paul the Apostle to the Romans, 11. 33-36.
O THE depth of the riches of the wisdom and of the knowledge of God! How incomprehensible are His judgments, and how unsearchable His ways! For who hath known the mind of the Lord? Or who hath been His counselor? Or who hath first given to Him, and recompense shall be made him? For of Him, and by Him, and in Him, are all things: to Him be glory for ever. Amen.
GRADUAL (Daniel 3. 55, 56)
BLESSED art Thou, O Lord, that beholdest the depths and sittest above the Cherubim. Blessed art Thou, O Lord, in the firmament of heaven, and worthy of praise for ever. Alleluia, alleluia. (Dan. 3. 52.) Blessed art Thou, O Lord, the God of our fathers, and worthy to be praised for ever. Alleluia.
GOSPEL Continuation of the holy Gospel according to St. Matthew, 28. 18-20.
AT THAT TIME Jesus said to His disciples: All power is given to Me in heaven and on earth. Going therefore, teach ye all nations, baptizing them in the name of the Father and of the Son and of the Holy Ghost. Teaching them to observe all things whatsoever I have commanded you; and behold I am with you all days, even to the consummation of the world.
OFFERTORY (Tobias 12. 6)
BLESSED be God the Father, and the onlybegotten Son of God, and also the Holy Spirit; because He hath shown us His mercy.
SANCTIFY, we beseech Thee, O Lord, our God, by the invocation of Thy holy Name, the Sacrifice we offer, and by it make us an everlasting offering unto Thee. Through our Lord…
PREFACE OF THE MOST HOLY TRINITY
IT is truly meet and just, right and for our salvation, that we should at all times and in all places give thanks to Thee, holy Lord, Father almighty, eternal God: Who, together with Thine onlybegotten Son and the Holy Ghost, art one God, one Lord: not in the Oneness of a single Person, but in the Trinity of one Substance. For what by Thy revelation we believe of Thy glory, the same do we believe of Thy Son, the same of the Holy Ghost, without difference or separation; so that in confessing the true and eternal Godhead, in It we should adore distinction in Persons, unity in Essence, and equality in Majesty: in praise of which Angels and Archangels, Cherubim also and Seraphim, day by day exclaim, without end and with one voice, saying: — Sanctus.
COMMUNION (Tobias 12. 6)
WE bless the God of heaven, and before all the living we will praise Him; because He has shown His mercy to us.
O LORD, our God, may our reception of this Sacrament and our acknowledgment of the holy and eternal Trinity and its undivided Unity be of avail to us for health of mind and body. Through our Lord …