O Oriens
It is altogether right and proper that we should celebrate Christ as the bringer of light on this, the day of the winter solstice.
This was an ancient holy day in many religions, as indeed it continues to be. On this, the shortest day of the year in the northern hemisphere, where people for eons have begged their divinity for the restoration of the light, and looked forward in joy at the lengthening of days, we too implore Christ to come and enlighten us who dwell in the shadow of death.
The people who walked in darkness have seen a great light; Upon those who dwelt in the land of gloom a light has shone.
(Isaiah 9:1[2])
It is not for nothing that the sanctuaries of Christian churches have traditionally been placed in the east.
Having said that, there’s a common myth these days that the date for Christmas was set to coincide with the pagan festivals of the solstice, but it’s not true.
The day for Christmas was fixed before the second century, based on the old Jewish tradition that prophets die on the anniversary of their conception.
The only Pagan holiday on 25 December is that of Sol Invictus, which was established on that date by the Emperor Heliogabalus in the third century.
O Oriens,
splendor lucis ætérnae, et sol justítiæ:
veni, et illúmina sedéntes in ténebris, et umbra mortis.
Englished:
O Rising Sun,
splendour of light eternal and sun of righteousness:
Come and enlighten those who dwell in darkness and the shadow of death.