Latin

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.

English

O Key of David and Scepter of the house of Israel, Who dost open and no man doth shut, Who dost shut and no man doth open, come and bring forth from his prison house the captive that sitteth in darkness and in the shadow of death.

Today’s O Antiphon makes reference to three scriptural texts. The first is from Isaiah 22:22, “And I will place on his shoulder the key of the house of David; he shall open, and none shall shut; and he shall shut, and none shall open.” The second is Revelation 3:7, “And to the angel of the church in Philadelphia write: ‘The words of the holy one, the true one, who has the key of David, who opens and no one shall shut, who shuts and no one opens.” The third is Isaiah 42:6b-7, “I have given you as a covenant to the people, a light to the nations, to open the eyes that are blind, to bring out the prisoners from the dungeon, from the prison those who sit in darkness.” The key of David and Scepter of the House of Israel both suggest the kingship of Christ, who after the resurrection rules in the heavenly kingdom. The antiphon is a petition to Christ to come and free us from the darkness of sin and death.

Let us pray:

O God, eternal majesty, whose ineffable Word
the immaculate Virgin received through the message of an Angel
and so became the dwelling-place of divinity,
filled with the light of the Holy Spirit,
grant, we pray, that by her example
we may in humility hold fast to your will.
Through our Lord Jesus Christ, your Son,
who lives and reigns with you in the unity of the Holy Spirit,
one God, for ever and ever.1

(1) See: Roman Missal, Collect December 20.