For two days before Christmas:
O Emmanuel: “O Emmanuel, king and lawgiver, desire of the nations, Savior of all people, come and set us free, Lord our God.” Isaiah had prophesied, “The Lord himself will give you this sign: the Virgin shall be with child, and bear a son, and shall name him Emmanuel.”
(7:14). Remember “Emmanuel” means “God is with us.”
For more information on the "O Antiphons" click here.
If you sang "O Come O Come Emmanuel" today, I hope you noticed that each of the verses represents one of the "O Antiphons".