Whether the flesh of Christ was assumed by the Word before being united to the soul?

Objections

Objection 1 : It would seem that the flesh of Christ was assumed by the Word before being united to the soul. For Augustine [*Fulgentius] says (De Fide ad Petrum xviii): "Most firmly hold, and nowise doubt that the flesh of Christ was not conceived in the womb of the Virgin without the Godhead before it was assumed by the Word." But the flesh of Christ would seem to have been conceived before being united to the rational soul, because matter or disposition is prior to the completive form in order of generation. Therefore the flesh of Christ was assumed before being united to the soul.
Objection 2 : Further, as the soul is a part of human nature, so is the body. But the human soul in Christ had no other principle of being than in other men, as is clear from the authority of Pope Leo, quoted above (Article [3]). Therefore it would seem that the body of Christ had no other principle of being than we have. But in us the body is begotten before the rational soul comes to it. Therefore it was the same in Christ; and thus the flesh was assumed by the Word before being united to the soul.
Objection 3 : Further, as is said (De Causis), the first cause excels the second in bringing about the effect, and precedes it in its union with the effect. But the soul of Christ is compared to the Word as a second cause to a first. Hence the Word was united to the flesh before it was to the soul.