Epiphany is about light. "Arise, shine; for your light has come, and the glory of the Lord has risen upon you." It is about the coming of the true Light into the darkness of this world. "Jesus Christ is the Light of the world, the Light no darkness can overcome." "In Him was life, and that life was the light of men."
The chief image of Epiphany is the star in the East whose light guided the Magi to the Child-King enthroned on His mother's lap. The Light of God's love had come to shine on the Gentiles, too. "The people walking in darkness have seen a great light; those who dwelt in a land of deep darkness, on them has light shined." The Gentiles worship Him with gifts fit for a king: gold, frankincense, and myrrh. The Magi rejoice in the light, and bow down and worship Him.
Light was the first word spoken by God into the chaotic darkness of creation. "Let there be light." And there was light. “God is light, and in Him there is no darkness."
Our lives are given to reflect the light of God's glory, and this is the noblest and most blessed purpose of all. We are, in a mystical way, to be an “epiphany” of Christ, so that every man can see His glory, and so welcome His Light into the dark world.