That meant the body of Jesus was without a sin nature.
The sin nature resides in our flesh.
Adam passed down the sin nature defect to all via his sperm.
The woman's ovum does not pass down the sin nature.
That is why Genesis 3:15 says it will be the "seed of the woman" that will bring forth the Messiah to crush Satan's head!
For the ancients, the offspring referred to the child as being the seed of the father.
In reference to Jesus? Not so, as seen in Genesis 3:15!
And I will put enmity between thee and the woman, and between thy seed and her seed;
it shall bruise thy head, and thou shalt bruise his heel.
No man's seed mentioned for Jesus father! Why?
Romans 5:12.
Therefore, just as sin entered the world through one man, and death through sin,
and in this way death came to all people, because all sinned.
Eve was the first sinner.
But, her ovum did not cause sin to enter the world, to pass down the sin nature.
Adam's sperm/seed was what caused the sin nature to enter all of humanity!
Adam's sperm was the cause. And all males still share this same attribute.
That is why Jesus could have no human father!
It was Mary's ovum that was used of God to make him true humanity. The Holy Spirit had to fertilize her womb.
For the Holy Spirit provided perfect genetic material needed as to fertilize Mary's ovum.
Jesus body was born as Adam's body had been created. Sinless.
In that way, Jesus would have a body free from the fallen sin nature.
Therefore, when Christ came into the world, he said: “Sacrifice and offering
you did not desire, but a body you prepared for me." Hebrews 10:5
Once his body was outside of Mary's womb (ek kolia) the Soul of Jehovah entered to make Himself become as a man...
A sinless man. A lamb without spot or blemish, for the atonement of all mankind.
grace and peace ...............