On Monday, we celebrate the Vigil of Christmas in the Extraordinary Form of the Roman Liturgy. Traditionally, this was a day of penance and fasting in the Church and the vestments for this celebration are the purple of Advent and Lent. It is a 1st Class Vigil which means that if it occurs on Sunday, it overrides the Sunday liturgy in importance. On this day, more than any other day in the calendar, we are filled with a sense of anticipation - and the propers reflect this sense.
Ant. Today you shall know that the Lord shall come and shall save us; and in the morning, you shall see His glory.
V. The earth is the Lord’s and the fullness thereof: the world and all they that dwell therein.
V. Glory be…
Ant. Lift up your portals, O ye princes; and be lifted up, O ye eternal portals, and the King of glory shall enter in.
Ant. The glory of the Lord shall be revealed, and all flesh shall see the salvation of our God.