"God saw that it was good" (Gn 1:10,12, etc.). Punctuating the story as it does, this refrain sheds a positive light upon every element of the universe and reveals the secret for a proper understanding of it and for its eventual regeneration: the world is good insofar as it remains tied to its origin and, after being disfigured by sin, it is again made good when, with the help of grace, it returns to the One who made it. It is clear that this process directly concerns not inanimate objects and animals but human beings, who have been endowed with the incomparable gift and risk of freedom. Immediately after the creation stories, the Bible highlights the dramatic contrast between the grandeur of man, created in the image and likeness of God, and the fall of man, which unleashes on the world the darkness of sin and death (cf. Gn 3).
27. This Christocentric vision sheds light upon another symbolism which Christian reflection and pastoral practice ascribed to the Lord's Day. Wise pastoral intuition suggested to the Church the christianization of the notion of Sunday as "the day of the sun", which was the Roman name for the day and which is retained in some modern languages.(29) This was in order to draw the faithful away from the seduction of cults which worshipped the sun, and to direct the celebration of the day to Christ, humanity's true "sun". Writing to the pagans, Saint Justin uses the language of the time to note that Christians gather together "on the day named after the sun",(30) but for believers the expression had already assumed a new meaning which was unmistakeably rooted in the Gospel.(31) Christ is the light of the world (cf. Jn 9:5; also 1:4-5, 9), and, in the weekly reckoning of time, the day commemorating his Resurrection is the enduring reflection of the epiphany of his glory. The theme of Sunday as the day illuminated by the triumph of the Risen Christ is also found in the Liturgy of the Hours(32) and is given special emphasis in the Pannichida, the vigil which in the Eastern liturgies prepares for Sunday. From generation to generation as she gathers on this day, the Church makes her own the wonderment of Zechariah as he looked upon Christ, seeing in him the dawn which gives "light to those who sit in darkness and in the shadow of death" (Lk 1:78-79), and she echoes the joy of Simeon when he takes in his arms the divine Child who has come as the "light to enlighten the Gentiles" (Lk 2:32). 2b1af7f3a8