The O Antiphon for today is:
"O Emmanuel, our King and Giver of Law: come to save us, Lord our God!"
And we sing: "O Come, O Come, Emmanuel!
O come, O come, Emmanuel, and ransom captive Israel, that morns in lonely exile here until the Son of God appear.
Refrain: Rejoice! Rejoice! Emmanuel shall come to thee, O Israel.
O come, thou Wisdom from on high, and order all things far and nigh;
to us the path of knowledge show, and teach us in her ways to go. Refrain.
O come, thou holy Lord of might, who to thy tribes on Sinai's height
in ancient times did give the law, in cloud and majesty and awe. Refrain.
I do not use Facebook, but this is about Bill Barry, SJ who died and is worth reading.