O Dayspring

This evening's "O Antiphon":

O Dayspring, brightness of eternal Light and Sun of Justice: come and enlighten those who sit in darkness and in the shadow of death.

In this context, "dayspring" is sometimes translated "morning star" or "rising dawn."

In Latin, the antiphon begins "O Oriens":



Here is another good video for invoking Christ as "Light" (music begins at 2:14):