Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
All Commentaries on Matthew 1:23 Go To Matthew 1
Leo of Rome
AD 461
Serm. 23, 1: The conception was by the Holy Spirit within the womb of the Virgin; who, as she conceived in perfect chastity, in like manner brought forthher Son.