O come o come Emmanuel

 

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from classic FM:O Come, O Come, Emmanuel – full lyrics

O come, O come, Emmanuel,

And ransom captive Israel,

That mourns in lonely exile here,

Until the Son of God appear.

Rejoice! Rejoice! Emmanuel

Shall come to thee, O Israel.

O come, Thou Rod of Jesse, free

Thine own from Satan's tyranny;

From depths of hell Thy people save,

And give them victory o'er the grave.

Rejoice! Rejoice! Emmanuel

Shall come to thee, O Israel.

O come, Thou Dayspring, from on high,

And cheer us by Thy drawing nigh;

Disperse the gloomy clouds of night,

And death's dark shadows put to flight.

Rejoice! Rejoice! Emmanuel

Shall come to thee, O Israel.

O come, Thou Key of David, come

And open wide our heav'nly home;

Make safe the way that leads on high,

And close the path to misery.

Rejoice! Rejoice! Emmanuel

Shall come to thee, O Israel.

O come, Adonai, Lord of might,

Who to Thy tribes, on Sinai's height,

In ancient times didst give the law

In cloud and majesty and awe.

Rejoice! Rejoice! Emmanuel

Shall come to thee, O Israel.

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from wikipedia:

 The text was originally written in Latin. It is a metrical paraphrase of the O Antiphons, a series of plainchant antiphons attached to the Magnificat at Vespers over the final days before Christmas.

The hymn has its origins over 1,200 years ago in monastic life in the 8th or 9th century. Seven days before Christmas Eve monasteries would sing the “O antiphons” in anticipation of Christmas Eve when the eighth antiphon, “O Virgo virginum” (“O Virgin of virgins”) would be sung before and after Mary's canticle, the Magnificat (Luke 1:46b–55). The Latin metrical form of the hymn was composed as early as the 12th century.[4]

The 1851 translation by John Mason Neale from Hymns Ancient and Modern is the most prominent by far in the English-speaking world,

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I should explain that Vespers is the evening prayer of the Divine Office, where psalms are recited or sung several times during the day. Usually these include a hymn, several psalms preceded by a short bible verse or poem called an antiphon, a bible reading, and then a canticle: For vespers it is the Magnificat of Mary from the gospel of Luke.

these prayers vary from day to day and can be found on line, the most popular app for this is at Universalis.

The history of the O antiphons preceding Christmas can be found here:

 O Antiphons.