Have mercy on us,
O God, Father almighty!
O God of hosts,
O God most high,
O Lord of the world,
O indescribable God,
O Creator of the elements,
O invisible God,
O untouchable God,
O unjudgeable God,
O immeasurable God,
O impatient God,
O immaculate God,
O immortal God,
O immoveable God,
O eternal God,
O perfect God,
O merciful God,
O admirable God,
O awesome God,
O golden good,
O Father in heaven,
have mercy on us!
Have mercy on us,
O almighty God,
O Jesus Christ,
O Son of living God!
O Son that was born twice,
O only-begotten of God the Father,
O first child of Mary the Virgin,
O Son of David,
O Son of Abraham,
O beginning of all,
O end of the world,
O Word of God,
O jewel of the heavenly kingdom,
O life of all,
О eternal truth,
О image, О likeness, О figure of God the Father,
О hand of God,
О arm of God,
О strength of God,
О right hand of God,
О true wisdom,
О true light that enlightens all darkness,
О guiding light,
О sun of truth,
О morning star,
О radiance of the Godhead,
О splendor of the eternal light,
О intelligence of the mystic world,
О mediator of all men,
О betrothed of the Church,
О faithful shepherd of the flock,
О expectation of the faithful,
О angel of the great counsel,
О true prophet,
О true apostle,
О true teacher,
О high priest,
О master,
О Nazarene,
О fair-haired one,
О ever living satisfaction,
О tree of life,
О true vine,
О sprout of the root of Jesse,
О King of Israel,
О Savior,
О door of the world,
О chosen flower of the plain,
О lily of the valleys,
О rock of strength,
О cornerstone,
О heavenly Zion,
О foundation of faith,
О innocent lamb,
О diadem,
О silent sheep,
О redeemer of humanity,
О true God,
О true man,
О lion,
О ox,
О eagle,
О crucified Christ,
О judge of Doom,
have mercy on us!
Have mercy on us,
О almighty God,
О Holy Spirit!
О Spirit that is nobler than all Spirits,
О finger of God,
О guard of the Christians,
О comforter of the sorrowful,
О gentle one,
О merciful intercessor,
О giver of true wisdom,
О author of Holy Scripture,
О ruler of speech,
О sevenfold Spirit,
О Spirit of wisdom,
О Spirit of understanding,
О Spirit of counsel,
О Spirit of strength,
О Spirit of knowledge,
О Spirit of gentleness,
О Spirit of awe,
О Spirit of charity,
О Spirit of grace,
О Spirit by whom all high things are ordained,
have mercy on us.
O Father, O Son, O Holy Spirit, have mercy on us.
Have mercy on us, eternal God,
O God in heaven, have mercy on us.
Have mercy on us, O glorious God,
Trinity glorious, ruling the circle of the earth.
O God, to your name be honor and praise,
now and forever. Amen.
May the almighty God be magnified in all the earth.
Source: Litany of the Trinity by Mugron, d. 980-981.
Source of this version: Kuno Meyer in Hibernica Minora, 1894, p. 43-44
Included in Prayers from the Ancient Celtic Church, © 2018, Paul C. Stratman
Original in old Irish:
Mugrón, comarba Coluim cille, hec uerba composuit de Trinitate.
Airchis dín, a Dé Athair uili-cumachtaig,
A Dé na slóg,
A Dé uasail,
A thigerna in domuin,
A Dé díaisneithe,
A duilemuin na ndúl,
A Dé nem-aicside,
A Dé nem-chorpdai,
A Dé nem-mitte,
A Dé nem-toimside,
A Dé nem-foiditnich,
A Dé nem-thruailnide,
A Dé nem-marbdai,
A Dé nem-chumscaigthe,
A Dé shuthain,
A Dé foirpthe,
A Dé trocair,
A Dé adhamraigthe,
A Dé aduathmair,
[A De in talman,
A De na teined,
A De na nusqui nexamail,
A Dhe ind aeoir [fh]uasnadaigh & rethanaig,
A De na nil-berlada im chrunni in talman,
A Dé na tonn a thec imdomhain inn aiceoin,
A Dhe na nairdreannach, & na nuili rinn étrocht,
A Dhe, ro thebestar in maisi, ro thinns[c]nastar la & aidchi,
A De ro thigernastar ar ifern cona daoscor-sluag,
A Dé ro follamnaighes co narcainglib,]
A maith forordai,
A Athair nemdai fail i nimib,
Airchis din.
[Ad Christum hec uerba pertinent.]
Airchis dín, a Dé uili-chumachtaig, a Isu Crist, a meic Dé bi,
A meic ro genair fo di,
A oen-geinne Dé Athar,
A prim-geinne Maire oige,
A meic Dauid
A meic Abraham
A thosach na nuili,
A forcend an domuin,
A Briathar Dé,
A shét na flatha némdai,
A betha na nuili,
A fírinne tshuthain,
A immhaigin, a chosmailes, a dealb Dé Athar,
A lám Dé,
A dóit Dé,
A nert Dé,
A deis Dé,
A fhir-ecnai,
A fhir-shoillsi cena soillsiges cech ndorchai,
A sholus taircedaig,
A grian na fírinde,
A rétla matindai,
A delrad na deachta,
A thaitnem na soillsi suthaine,
[A thopur in bethad bith-buain,]
A thuicsi an betha rundai,
A etirsidaigthe na nuile duine,
A thairngertaig na hecailse,
A oegaire tairise an treoid,
A frescisiu na niresech,
A aingil na comairli móire,
A fhir-faith,
A fhir-abstail,
A fhir-forcetlaid,
A uasal-shacairt,
A Maigistir,
A Nasarda,
A glan-mongaich,
A shasad bith-béo,
A bile an betha[d],
[A fhir-nem],
A fhir-fhinemain,
A flesc do freim Iesse,
A rí Israel,
A shlainicid,
A dorus an betha[d]
A blath togaide in maige,
A lil na nglenn,
A ail na sonairte,
A cloch uillech,
A Sion nemdai,
A fotha na hirse,
A uain ennaic,
A mind,
A choera cennais,
A thathchrithid in chiniud[a] daon[d]a,
A fír-De,
A fhír-duine,
A leo,
A oc-daim,
A aquil,
A Christ crochdai,
A brithem bratha,
Airchis dín.
[Hec uerba ad Spiritum Sanctum pertinent.]
Airchis dín a Dé uile-cumachtaig, a Spirut Noib,
A Spirut as uaisle cech spirut.
A mér Dé,
A coimed na cristaide,
A comdidantaid na toirsech,
A choen-suaraich,
A etar-guthid trocar,
A thi[d]nachtaid ind fír-ecnai,
A auctair na scribture noibe,
A airrechtaid na érlabrai,
A Spirut secht-dealbaig,
A Spirut in ecnai,
A Spirut in inntlechtai,
A Spirut na comairle,
A Spirut na sonairte,
A Spirat ind fessa,
A Spirut na báide,
A Spirut ind uamain,
A Spirut na deirce,
A Spirut ind ratha,
A Spirut on ordnigther cech nuasal,
[A Spirut loisces na cinta,
A Spirut nighes na pectha,
A Spirut naomh fhollamnaighes na huile dule, aicsidhe & nem-fhaicsidhe,
Aircis dim,
A Dhe uili-cumachtaig, ind Athair nemdha, & a Meic aon-geine,
Aircis dim.
Aircis dim, a Athair, a Meic, a Spirut naom.
Aircis dim a De aonda,
A De do nim, aircis dim.
Aircis dim, a De o fuilid, tria fuilid folla[m]nugud na nuile dul det, a De.
Rot be onoir & inocbail in secula seculorum. Amen.
Omnipotens Deus magnificetur in uniuersa terra, et reliqua.]
Source: https://celt.ucc.ie/published/G206009.html
A Collection of Prayers 