The Word Became Flesh
Nativity as per John
He was not a phantom or a spirit when He ministered on earth, nor was His body a mere illusion. John and the other disciples each had a personal experience that convinced them of the reality of the body of Jesus (1 John 1:1–2). Even though John’s emphasis is the deity of Christ, he makes it clear that the Son of God came in the flesh and was subject to the sinless infirmities of human nature.
The word Flesh expresses the meaning of the Evangelist more forcibly than if he had said that he was made man. He intended to show to what a mean and despicable condition the Son of God, on our account, descended from the height of his heavenly glory. When Scripture speaks of man contemptuously, it calls him flesh. Now, though there be so wide a distance between the spiritual glory of the Speech of God and the abominable filth of our flesh, yet the Son of God stooped so low as to take upon himself that flesh, subject to so many miseries.