Atos 13

Atos 13:33

The only one who knows the Father and who is only known by the Father as his Wisdom and Word and as "the Angel of great counsel" according to the prophet, perfectly explains to us the mystery of the incarnation. Since he was Son by nature and by truth and had shone forth from the very essence of God the Father, he was made flesh, that is, man, according to John. He desired to be called the brother of those who are in the world and to be born according to flesh like us. However, he was before time and sat with his parent even though he was made flesh. The Father knew him also as Son and said to him, "You are my Son; today I have begotten you." Observe the explicit confession, nay rather, the proclamation! Indeed, he said, "you are" in order to point out that he existed before time. Actually, he was never in time but was always the same, to be sure, the Son. And he added, "today I have begotten you," in order to indicate his final generation according to the flesh that he voluntarily underwent in the womb of the holy Virgin so that he was also called "begotten of God." — CATENA ON THE ACTS OF THE APOSTLES 13.33