In Genesis God spoke and it was so… honestly its not hard for God to create somthing that did not exist… and speak it into existence. In addition we read in Genesis that God would produce the Messiah by the seed of the woman. Woman do not produce seed. God intended to make it clear that the birth of Christ would be supernatural… unexplainable… humanly speaking. Furthermore the book of Romans states Jesus was in the “likeness” of sinful flesh. In esssence Jesus was manifest to humanity in the likeness of human flesh… but not in sinful fallen cursed flesh like you and me. The Lord bypassed the curse of sin… to be born without sin… to redeem sinners… who would believe in Him. You and I will never know the how… God was able to… the only thing that matters is that He did… Amen?

There are a lot of stories about the Son of God being born to a virgin mother in many cultures throughout earlier history. Moses, who was raised by an Egyptian Pharaoh, had access to all of these ancient stories. He also learned to write, which is why he wrote the first 5 books of the Bible.

The Universe, is made out of a lot of stuff. There are ways to make matter out of energy. The Creation of the Y chromosome would take some next level quantum particle physics. All of the historic "Gods" sounded pretty next level, they would know how to do some quantum particle physics.