Luke 1:2 Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word; Luke wrote down what the eyewitnesses told him. Much the same as the Quran - men who wrote down what Mohammad said.
My point is that God can create. It isn't "impossible" for God to create a body even as He created Adam.
As far as son... The Apostle John said
John 1:12
But as many as received him, to them gave he power to become the
sons of God, even to them that believe on his name:
I also am a son of God. And God didn't need a woman to create a new spirit inside of me. Jesus said, "Verily, verily, I say unto thee, Except a man be
born again, he cannot see the kingdom of God."
When I accepted Jesus as my Lord, I am born again of God and became His child and part of His family. My sins were washed away and I became a new creature (one created again in His image and in His likeness--like unto Adam).
So God does not need to cohabitant with a woman to create a new spiritual being even as "nothing is impossible for God" when He created a body that was going to be called Jesus without the need of a sperm for Adam was not created from a sperm.