From the very beginning, God manifested himself to our first parents, Adam and Eve, and invited them to intimate communion with himself. After their fall, he did not cease his revelation to them but promised salvation for all their descendants. After the flood, he made a covenant with Noah, a covenant between himself and all living beings.
God chose Abram, calling him out of his country, making him “the father of a multitude of nations” (Genesis 17:5), and promising to bless in him “all the nations of the earth” (Genesis 12:3). The people descended from Abraham would be the trustee of the divine promise made to the patriarchs.
God formed Israel as his chosen people, freeing them from slavery in Egypt, establishing with them the covenant of Mount Sinai, and, through Moses, giving them his law.
The prophets proclaimed a radical redemption of the people and a salvation which would include all nations in a new and everlasting covenant. From the people of Israel and from the house of King David, would be born the Messiah, Jesus.
The full and definitive stage of God's revelation is accomplished in his Word made flesh, Jesus Christ, the mediator and fullness of Revelation. He, being the only-begotten Son of God made man, is the perfect and definitive Word of the Father. In the sending of the Son and the gift of the Spirit, Revelation is now fully complete, although the faith of the Church must gradually grasp its full significance over the course of centuries.
The Father achieved a perfect work of love by sending his only Son Jesus in the world (it is the mystery of the Incarnation celebrated the Christmas Day).
By the obedience of Jesus to his Father, a new and eternal covenant was sealed and the men could find the friendship with God (it is the mystery of the Redemption celebrated at Easter).
