Catechism of the Catholic Church #460 :

"The Word became flesh to make us 'partakers of the divine nature'
[2 Peter 1:4 about 65 A.D.]:

'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'
[Saint Irenaeus, Against Heresies, about 170 A.D.].

'For the Son of God became man so that we might become God'
[Saint Athanasius, On the Incarnation, 321 A.D.].

'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.'
[Saint Thomas Aquinas, 13th Century]"

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