John Chrysostom
Catena Aurea · Johannesevangelium 6
The Jews then murmured at him, because he said, I am the bread which came down from heaven. And they said, Is not this Jesus, the son of Joseph, whose father and mother we know? how is it then that he saith, I came down from heaven? Jesus therefore answered and said unto them, Murmur not among yourselves. No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day. It is written in the prophets, And they shall be all taught of God. Every man therefore that hath heard, and hath learned of the Father, cometh unto me. Not that any man hath seen the Father, save he which is of God, he hath seen the Father.
(Hom. xlvi. 1) It is evident that they did not yet know of His miraculous birth: for they call Him the Son of Joseph. Nor are they blamed for this. Our Lord does not reply, I am not the Son of Joseph: for the miracle of His birth would have overpowered them. And if the birth according to the flesh were above their belief, how much more that higher and ineffable birth.