The twenty-third day before Christmas

O Come, All Ye Faithful
Attributed to John Francis Wade
Translator: Frederick Oakeley
Tune: Adeste Fideles

O come, all ye faithful, joyful and triumphant,
O come ye, O come ye to Bethlehem;
come and behold him, born the King of angels;

O come, let us adore him, O come, let us adore him,
O come, let us adore him, Christ the Lord.

God of God, Light of Light;
lo, he abhors not the Virgin's womb;
very God, begotten, not created; 

Sing, choirs of angels, sing in exultation,
sing, all ye citizens of heav'n above:
glory to God in the highest; 

Yea, Lord, we greet thee, born this happy morning;
Jesus, to thee be all glory giv'n;
Word of the Father, now in flesh appearing;

Adeste fideles læti triumphantes,
Venite, venite in Bethlehem.
Natum videte
Regem angelorum: 

Venite adoremus
Dominum. 

Deum de Deo, lumen de lumine
Gestant puellæ viscera
Deum verum, genitum non factum. 

Cantet nunc io, chorus angelorum;
Cantet nunc aula cælestium,
Gloria, gloria in excelsis Deo, 

Ergo qui natus die hodierna.
Jesu, tibi sit gloria,
Patris æterni Verbum caro factum.

Luke 2:10-18 (KJV)

And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. For unto you is born this day in the city of David a Saviour, which is Christ the Lord. And this shall be a sign unto you; Ye shall find the babe wrapped in swaddling clothes, lying in a manger. And suddenly there was with the angel a multitude of the heavenly host praising God, and saying, Glory to God in the highest, and on earth peace, good will toward men. And it came to pass, as the angels were gone away from them into heaven, the shepherds said one to another, Let us now go even unto Bethlehem, and see this thing which is come to pass, which the Lord hath made known unto us. And they came with haste, and found Mary, and Joseph, and the babe lying in a manger. And when they had seen it, they made known abroad the saying which was told them concerning this child. And all they that heard it wondered at those things which were told them by the shepherds.

From the Nicene Creed:

I believe [...] in one Lord Jesus Christ, the only-begotten Son of God,

begotten of his Father before all worlds:
God of God, Light of Light, very God of very God,
[... Who] was incarnate by the Holy Spirit of the virgin Mary,

John 1:14 (KJV)

And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.