YHWH the Creator became Christ/Messiah the Son!
Two gospels are being taught, one is that God himself done everything including creating heaven and earth
and came in the flesh to save man who was created is in his Image and likeness, and the other teaches that
God done nothing himself, but had everything done!!!
apostle John starts his gospel off, by saying that the word is God and was made flesh, John 1:1 through 14.
And this set the tone for the whole book of John.
John 6:41-45 KJV says,
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. (now he is fixing to answer the question of how he come down from above)
 “It is written in the prophets”, “And they shall be all taught of God”.
“Every man “therefore” that hath heard”, (“therefore” every man that hath
heard) and hath learned of the Father/God, cometh unto me.”
Every man that hath heard” (heard what is written in the prophets, i.e. that they shall all be taught of God, and hath
learned of the Father/God, cometh unto me.”
is because he is God in the flesh teaching them!!!
The “therefore” every man that hath heard and learned of the Father/God, cometh unto me, is referring
to what is written in the prophets “they shall be all taught of God”, and he is the one teaching
In other words, everyone that has heard
what is written in the prophets, i.e. “that they shall all be taught of God”, and learned of the Father, cometh
to him, because is the one that is teaching them, and he is the Father God in the flesh teaching them!!!
Why else would he say that, or quote that particular verse, in response to their
question. The question was, “how is it then that he saith, I came down from heaven?”
Isaiah 54:13 KJV says,
 “And all thy children shall be taught of the LORD; and great shall be the peace of thy children.”
They knew that he had a fleshly mother and brothers, etc that lived there in
that town, but how did he come down from above, and his answer was a quote from the prophets that God would teach them which
is another way of saying that he came down from heaven as God, because he is the one teaching them, and that is how he came
down from above, as God, because he is God in flesh form the seed of David. Peter said that he is BOTH, Lord and Christ/Messiah,
This also confirms the virgin birth.
Paul teaches this mystery and they actually crucified The Lord of Glory,
1 Corinthians 2:7-9 KJV
 “But we speak
the wisdom of God in a “mystery”, even the hidden wisdom , which God ordained before the world unto our glory:
 Which none of the princes of this world knew: for had they known it , “they would not have crucified “the
Lord” of glory”.  But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart
of man, the “things which God hath prepared” for them that love him.
People still don’t know who he is.