Eliyahu said:
You can never explain Incarnation.
It seems to me as if you will never be able to explain the incarnation, as long as your focus is on the Word and only on the Word. It looks like you are disregarding all other Scriptures except that the "Word became flesh." A warning: that is what the cults do.
You must take into account other Scriptures.
You must take into account not only the deity of Christ but also the humanity. Christ was fully man and fully God. You are ignoring the fact that he was fully man and are only considering that he was fully God. Was he fully man Eliyahu? Yes or No?
If yes where did he get that human nature from?
The only plausible answer is that he got it from Mary.
If one irrationally concludes that that leaves the door open for the Immaculate Conception because Christ would have needed a sinless body, then it also leaves the door open that Mary's mother would have needed a sinless mother, and her grandmother, and great-grandmother...all the way back to Adam. Perhaps then we would all be sinless and just foget that fall ever happened. What nonsense!!
The sinful nature is inherited through the "seed" of Adam.
The Bible says specifically that Christ would come through "her seed" that is the seed of the woman or through Mary. The egg or ovum doesn't become or inherit a sinful nature unless it is impregnated by man.
Romans 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
But Mary conceived by the Holy Spirit who is not sinful. Thus her "seed" was remained sinless and Christ inherited a human nature like us and yet without a sin nature.
Christ was born fully man and fully God at the same time.
God was manifest in the flesh. The Word became flesh. The only way that the Word, the second person of the triune Godhead, could take upon himself man's human nature and still be without sin is to be born by a virgin, which Christ was. He was human: suffered as a human; was tempted in all points as a human; thirsted and hungered as a human, needed rest as a human, etc. This could only happen because he was born as a human and took upon himself human flesh, not divine flesh. He was fully God (the Word), and fully man at the same time.
Why do you continue to neglect to consider the human nature of Christ?