Whether the Mother of God was a virgin in conceiving Christ?

Objections

Objection 1 : It would seem that the Mother of God was not a virgin in conceiving Christ. For no child having father and mother is conceived by a virgin mother. But Christ is said to have had not only a mother, but also a father, according to Lk. 2:33: "His father and mother were wondering at those things which were spoken concerning Him": and further on (Lk. 2:48) in the same chapter she says: "Behold I and Thy father [Vulg.: 'Thy father and I'] have sought Thee sorrowing." Therefore Christ was not conceived of a virgin mother.
Objection 2 : Further (Mt. 1) it is proved that Christ was the Son of Abraham and David, through Joseph being descended from David. But this proof would have availed nothing if Joseph were not the father of Christ. Therefore it seems that Christ's Mother conceived Him of the seed of Joseph; and consequently that she was not a virgin in conceiving Him.
Objection 3 : Further, it is written (Gal. 4:4): "God sent His Son, made of a woman." But according to the customary mode of speaking, the term "woman" applies to one who is known of a man. Therefore Christ was not conceived by a virgin mother.
Objection 4 : Further, things of the same species have the same mode of generation: since generation is specified by its terminus just as are other motions. But Christ belonged to the same species as other men, according to Phil. 2:7: "Being made in the likeness of men, and in habit found as a man." Since therefore other men are begotten of the mingling of male and female, it seems that Christ was begotten in the same manner; and that consequently He was not conceived of a virgin mother.
Objection 5 : Further, every natural form has its determinate matter, outside which it cannot be. But the matter of human form appears to be the semen of male and female. If therefore Christ's body was not conceived of the semen of male and female, it would not have been truly a human body; which cannot be asserted. It seems therefore that He was not conceived of a virgin mother.