O Key of David

and scepter of the house of Israel,
who opens and no man shuts,
who shuts and no man opens:
come,
and bring out the captive from the prison house:
he who sits in darkness
and the shadow of death.

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" Antiphon for tonight's Vespers