Whether the accomplishment of Christ's conception should be attributed to the Holy Ghost?

❌ Objection 1 : It would seem that the accomplishment of Christ's conception should not be attributed to the Holy Ghost, because. as Augustine says (De Trin. i), "The works of the Trinity are indivisible, just as the Essence of the Trinity is indivisible." But the accomplishment of Christ's conception was the work of God. Therefore it seems that it should not be attributed to the Holy Ghost any more than to the Father or the Son.

❌ Objection 2 : Further, the Apostle says (Gal. 4:4): "When the fulness of time was come, God sent His Son, made of a woman"; which words Augustine expounds by saying (De Trin. iv): "Sent, in so far as made of a woman." But the sending of the Son is especially attributed to the Father, as stated in the FP, Question [43], Article [8]. Therefore His conception also, by reason of which He was "made of a woman," should be attributed principally to the Father.

❌ Objection 3 : Further, it is written (Prov. 9:1): "Wisdom hath built herself a house." Now, Christ is Himself the Wisdom of God; according to 1 Cor. 1:24: "Christ the Power of God and the Wisdom of God." And the house of this Wisdom is Christ's body, which is also called His temple, according to Jn. 2:21: "But He spoke of the temple of His body." Therefore it seems that the accomplishment of Christ's conception should be attributed principally to the Son, and not, therefore, to the Holy Ghost.