As we near the end of Advent, Holy Mother Church once again gives us the beautiful and beloved "O" Antiphons. At every Vespers (Evening Prayer), an antiphon is prayed before and after the Canticle of Mary which changes throughout the year according to the season and day. In the seven days leading up to Christmas, these antiphons are particularly unique and profound. Each antiphon begins by addressing Our Lord by a different title, referencing a way that His coming fulfills both the Old Testament prophecies and our present needs. They all begin with the word "O" and then continue with the title and text of the day, such as in the first: "O Wisdom of our God Most High..."