Antienne O Clavis  ; Antiennes de l'Avent, Maître du Méliacin Antiphonaire dominicain. Ordre des Prêcheurs . Date d'édition : 1300 Source Gallica BnfThe 'Great O's' of Advent are seven invocations of the different names of Christ, looking towards his coming into the world under different titles. Each one, addressing Christ, begins 'O..!'

They are used as antiphons (opening and closing threads of song) for the Magnificat which is how we offer them, during Evening Prayer, from Friday 17 to Thursday 23 December.

O Sapientia, quae ex ore Altissimi prodiisti,
attingens a fine usque ad finem,
fortiter suaviterque disponens omnia:
veni ad docendum nos viam prudentiae.
O Wisdom, coming forth from the mouth of the Most High,
reaching from one end to the other,
mightily and sweetly ordering all things:
Come and teach us the way of prudence.
O Adonai, et Dux domus Israel,
qui Moysi in igne flammae rubi apparuisti,
et ei in Sina legem dedisti:
veni ad redimendum nos in brachio extento.
O Adonai, and leader of the House of Israel,
who appeared to Moses in the fire of the burning bush
and gave him the law on Sinai:
Come and redeem us with an outstretched arm.
O radix Jesse, qui stas in signum populorum,
super quem continebunt reges os suum,
quem Gentes deprecabuntur:
veni ad liberandum nos, jam noli tardare.
O Root of Jesse, standing as a sign among the peoples;
before you kings will shut their mouths,
to you the nations will make their prayer:
Come and deliver us, and delay no longer.
O Clavis David, et sceptrum domus Israel;
qui aperis, et nemo claudit;
claudis, et nemo aperit:
veni, et educ vinctum de domo carceris,
sedentem in tenebris, et umbra mortis.
O Key of David and sceptre of the House of Israel;
you open and no one can shut;
you shut and no one can open:
Come and lead the prisoners from the prison house,
those who dwell in darkness and the shadow of death.
O Oriens,
splendor lucis aeternae, et sol justitiae:
veni, et illumina sedentes in tenebris, et umbra mortis.
O Morning Star,
splendour of light eternal and sun of righteousness:
Come and enlighten those who dwell in darkness and the shadow of death.
O Rex Gentium, et desideratus earum,
lapisque angularis, qui facis utraque unum:
veni, et salva hominem,
quem de limo formasti.
O King of the nations, and their desire,
the cornerstone making both one:
Come and save the human race,
which you fashioned from clay.
O Emmanuel, Rex et legifer noster,
exspectatio Gentium, et Salvator earum:
veni ad salvandum nos, Domine, Deus noster.
O Emmanuel, our king and our lawgiver,
the hope of the nations and their Saviour:
Come and save us, O Lord our God.