God, infinitely perfect and blessed in himself, in a plan of sheer goodness freely created man to make him share in his own blessed life. For this reason, at every time and in every place, God draws close to man. He calls man to seek him, to know him, to love him with all his strength. He calls together all men, scattered and divided by sin, into the unity of his family, the Church. To accomplish this, when the fullness of time had come, God sent his Son as Redeemer and Saviour. In his Son and through him, he invites men to become, in the Holy Spirit, his adopted children and thus heirs of his blessed life.

So that this call should resound throughout the world, Christ sent forth the apostles he had chosen, commissioning them to proclaim the gospel: "Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you; and lo, I am with you always, to the close of the age." 4 Strengthened by this mission, the apostles "went forth and preached everywhere, while the Lord worked with them and confirmed the message by the signs that attended it." 5

With the progress of Revelation, the reality of sin is also illuminated. Although to some extent the People of God in the Old Testament had tried to understand the pathos of the human condition in the light of the history of the Fall narrated in Genesis, they could not grasp this story's ultimate meaning, which is revealed only in the light of the death and Resurrection of Jesus Christ. 261 We must know Christ as the source of grace in order to know Adam as the source of sin. the Spirit-Paraclete, sent by the risen Christ, came to "convict the world concerning sin", 262 by revealing him who is its Redeemer.

The account of the Fall in Genesis 3 uses figurative language, but affirms a primeval event, a deed that took place at the beginning of the history of man. 264 Revelation gives us the certainty of faith that the whole of human history is marked by the original fault freely committed by our first parents. 265

Behind the disobedient choice of our first parents lurks a seductive voice, opposed to God, which makes them Fall into death out of envy. 266 Scripture and the Church's Tradition see in this being a fallen angel, called "Satan" or the "devil". 267 The Church teaches that Satan was at first a good angel, made by God: "The devil and the other demons were indeed created naturally good by God, but they became evil by their own doing." 268

Scripture speaks of a sin of these angels. 269 This "Fall" consists in the free choice of these created spirits, who radically and irrevocably rejected God and his reign. We find a reflection of that rebellion in the tempter's words to our first parents: "You will be like God." 270 The devil "has sinned from the beginning"; he is "a liar and the father of lies". 271