20 December O Clavis David, et sceptrum domus Israel; qui aperis, et nemo claudit; claudis, et nemo aperit: veni, et educ vinctum de domo...
19 December O Radix Jesse, qui stas in signum populorum, super quem continebunt reges os suum, quem Gentes deprecabuntur: veni ad liberandum nos, jam...
The O Antiphons contain images from the Old Testament that give us insight into the new life that we welcome at Christmas, Our Lord...