Collect for the third Sunday of Advent: Gaudete Sunday

This is the collect for the Third Sunday of Advent in the Extraordinary Form. It is also the prayer we say (this week) after singing O Come O Come Emmanuel around our Advent Wreath.

Bow down thine ear we beseech Thee O Lord to our prayer and by the brightness of thine Advent, lighten the darkness of our minds.

(This is corrected from a version I mistyped on first posting it!)