The Church often prays during Advent that Jesus will come again, and that his coming would occur at Christmas. It would be a perfect time of the year for Jesus' Second Coming to occur, as we are already in a state of preparation, eagerly awaiting the celebration of his birth.
At the same time, some of us may be hesitant to pray such a prayer. Are we ready for Jesus to come again? Do we want the world to end? These are questions we should ask ourselves, as they may reveal areas in our heart that still need to grow.
Here is such a prayer from Dom Prosper Gueranger in his Liturgical Year, expressing the hope of the Church that Jesus would hasten and come again at Christmas.