Whether Christ's conception was natural?

❌ Objection 1 : It would seem that Christ's conception was natural. For Christ is called the Son of Man by reason of His conception in the flesh. But He is a true and natural Son of Man: as also is He the true and natural Son of God. Therefore His conception was natural.

❌ Objection 2 : Further, no creature can be the cause of a miraculous effect. But Christ's conception is attributed to the Blessed Virgin, who is a mere creature: for we say that the Virgin conceived Christ. Therefore it seems that His conception was not miraculous, but natural.

❌ Objection 3 : Further, for a transformation to be natural, it is enough that the passive principle be natural, as stated above (Question [32], Article [4]). But in Christ's conception the passive principle on the part of His Mother was natural, as we have shown (Question [32], Article [4]). Therefore Christ's conception was natural.