Below is a litany for use during the Advent season. It is based on the "Great O Antiphons" used before and after the Magnificat at Evening Prayer in the week prior to Christmas, which are themselves based on various passages of the Old Testament which the Church has seen as prophetic of Christ's coming. This litany (and the prayers following it) may be used at morning, noon, or evening prayers, or as a way to meditate on the message of the Advent season at another time, such as a Quiet Day or a retreat.
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O Wisdom, proceeding from the Most High, reaching from one end to another, mightily and sweetly ordering all things: