There is some fantastic theology found in Christmas Carols.
"Yet in thy dark streets shineth
The everlasting Light;
The hopes and fears of all the years
Are met in thee tonight."
"No ear may hear His coming,
But in this world of sin,
Where meek souls will recieve Him, still
The dear Christ enters in."
O Come All Ye Faithful
"Word of the Father, now in flesh appearing!"
John 1: 1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 He was in the beginning with God. 3 All things came into being through Him, and apart from Him nothing came into being that has come into being. 4 In Him was life, and the life was the Light of men. 5 The Light shines in the darkness, and the darkness did not comprehend it.
14 And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth.
Hark! The Herald Angels Sing (This one is just incredible)
""Christ, by highest heav'n adored;
Christ, the everlasting Lord!
Late in time behold Him come,
Offspring of a Virgin's womb:
Veiled in flesh the Godhead see;
Hail the incarnate Deity,
Pleased as man with men to dwell,
Jesus, our Emmanuel."
"Hail, the heav'n-born Prince of Peace!
Hail, the Sun of Righteousness!
“But for you who fear My name, the sun of righteousness will rise with healing in its wings; and you will go forth and skip about like calves from the stall.)
Mild, He lays His glory by,
Born that man no more may die,
Born to raise the sons of earth,
Born to give them second birth."