For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counselor, The mighty God, The everlasting Father, The Prince of Peace.
All Commentaries on Isaiah 9:6 Go To Isaiah 9
Ambrose of Milan
AD 397
So we have in another place: “A child is born to us, and a son is given to us.” In the term child there is an indication of age; in the term son a reference to the fullness of Godhead. He was made of his mother and born of the Father, but as the same person he was born and given. Do not think of two but of one. For the Son of God is one person, born of the Father and sprung from the virgin. The names differ in order but unite in one, just as the scriptural lesson just read teaches: “Man was made in her, and the Highest himself has founded her.” He was man indeed in body, but the Highest in power. And while he is God and man through diversity of nature, he is the same person, not two persons, though being God and man. He has, therefore, something peculiar to his own nature and something in common with us, but in both cases he is one and in both he is perfect.
