You really do learn something new every day.
Today I was searching online for something - I don't even remember what now - and I stumbled across a page aboutthe Antiphons. What are the Antiphons? Oh, so glad you asked. They are short prayers basedon various titles used for the Christ that the church started using in the 8th and 9th centuries. From December 17th to 23rd, the church would offer one of the Antiphons as prayer. O Come, O Come, Emmanuel is based on the last Antiphon.
And without further ado, here they are:
O WISDOM, who came from the mouth of the Most High, reaching from end to end and ordering all things mightily and sweetly: COME, and teach us the way of prudence. Amen.
O LORD AND RULER of the House of Israel, who appeared to Moses in the flame of the burning bush and gave him the law on Sinai: COME, and redeem us with outstretched arms. Amen.
O ROOT OF JESSE, that stands for an ensign of the people, before whom the kings keep silence and unto whom the Gentiles shall make supplication: COME, to deliver us, and tarry not. Amen.
O KEY OF DAVID, and Sceptre of the House of Israel, who opens and no man shuts, who shuts and no man opens: COME, and bring forth the captive from his prison, he who sits in darkness and in the shadow of death. Amen.
O DAWN OF THE EAST, brightness of light eternal, and Sun of Justice: COME, and enlighten those who sit in darkness and in the shadow of death. Amen.
O KING OF THE GENTILES and their desired One, the Cornerstone that makes both one: COME, and deliver man, whom you formed out of the dust of the earth. Amen.
O EMMANUEL, God with us, Our King and Lawgiver, the expected of the nations and their Saviour: COME to save us, O Lord our God. Amen.