CCC 460
© Libreria Editrice Vaticana Source: vatican.va
The Word became flesh to make us "partakers of the divine nature": 2 Pt 1:4. "For this is why the Word became man, and the Son of God became the Son of man: so that man, by entering into communion with the Word and thus receiving divine sonship, might become a son of God." St. Irenaeus, Adv. haeres. 3, 19, 1: PG — Patrologia Graeca (Migne)/1, 939. "For the Son of God became man so that we might become God." St. Athanasius, De inc. 54, 3: PG — Patrologia Graeca (Migne)B. "The only-begotten Son of God, wanting to make us sharers in his divinity, assumed our nature, so that he, made man, might make men gods." St. Thomas Aquinas, Opusc. 57, 1-4.
Read the full chapter 2. I Believe in Jesus Christ, the Only Son of God ¶422–682