19 Being, then, Man with this body, Jesus Christ is both the Son of God and Son of Man, Who emptied Himself of the form of God, and received the form of a servant. There is not one Son of Man and another Son of God; nor one in the form of God, and another born perfect man in the form of a servant: so that, as by the nature determined for us by God, the Author of our being, man is born with body and soul, so likewise Jesus Christ, by His own power, is God and Man with flesh and soul, possessing in Himself whole and perfect manhood, and whole and perfect Godhead.
Source: On the Trinity (New Advent)