8. What are the next stages of God's Revelation?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.
Further reading: CCC 59-64, 729. What is the full and definitive stage of God's Revelation?
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.
“In giving us his Son, his only and definitive Word, God spoke everything to us at once in this sole Word, and he has no more to say.” (Saint John of the Cross)
Further reading: CCC 65-66, 73