Origen

“ If God had wished to send down His Spirit from Himself, what need was there to breathe it into the womb of a woman? For as one who knew already how to form men, He could also have fashioned a body for this person, without casting His own Spirit into so much pollution ”

“ And yet those who say that they are created are not agreed as to the manner of their creation, for their appearance does not suggest it, although the force of reason [6] may have discovered that they are created, and how their creation was effected. ”

“ And in this he acts like those who imagine that the sun’s rays are polluted by dung and by foul-smelling bodies, and do not remain pure amid such things. If, however, according to the view of Celsus, the body of Jesus had been fashioned without generation, those who beheld the body would at once have believed that it had not been formed by generation ”