Pseudo-Augustine
Catena Aurea · Matthäusevangelium 1
And Jacob begat Joseph the husband of Mary, of whom was born Jesus, who is called Christ.
(Vigil. Cont. Fel. 12. ap. Aug. t. 8. p. 45.) But not one was the Son of God, and another the son of a man; but the same Christ was the Son of both God and man. And as in one man, the soul is one and the body is another, so in the mediator between God and man, the Son of God was one, and the son of man another; yet of both together was one Christ the Lord. Two in distinction of substance, one in unity of Person. But the heretic objects; “how can you teach Him to have been born in time whom you say was before coeternal with His Father? For birth is as it were a motion of a thing not in being, before it be born, bringing about this, that by benefit of birth it come into being. Whence it is concluded, that He who was in being cannot be born; if He could be born He was not in being.” (To this it is replied by Augustine;) Let us imagine, as many will have it, that the universe has a general soul, which by some unspeakable motion gives life to all seeds, so as that itself is not mixed up with the things it produces. When this then passes forth into the womb to form passible matter to its own uses, it makes one with itself the person of that thing which it is clear has not the same substance. And thus, the soul being active and the matter passive, of two substances is made one man, the soul and the flesh being distinct; thus it is that our confession is, that that soul is born of the womb which in coming to the womb we say conferred life on the thing conceived. He, I say, is said to be born of His mother, who shaped to Himself a body out of her, in which He might be born; not as though before He was born, His mother might, as far as pertained to Him, not have been in being. In like manner, yea in a manner yet more incomprehensible and sublime, the Son of God was born, by taking on Him perfect manhood of his Mother. He who by his singular almighty power is the cause of their being born to all things that are born.