Malachi 3:20: "For you who fear my name, there will arise the sun of justice with its healing rays".
2 Peter 1:19: "Keep your attention closely fixed on it, as you would on a lamp shining in a dark place, until the first streaks of dawn appear and the morning star rises in your heart".
This title is variously translated "morning star", "Dayspring", "rising sun", "radiant dawn", "orient". All beautifully express the idea of light shattering the darkness of night, of sin and death, of sickness and despair, with its brightness bringing healing and warmth to cold hearts. Jesus is indeed the true light, the radiance of his Father's splendor. The church prays this petition daily in the Benedictus, joining in the words of Zechariah: "He, the Dayspring, shall visit us in his mercy to shine on those who sit in darkness and in the shadow of death" (Luke 1:78-79).
Reflections on this O Antiphon:
Wellsprings Reflections - O Orien
University of Notre Dame - O Orien
Blue Eyed Ennis - O Orien
Liturgy NZ - O Orien
SS102fm post in 2014 - O Orien