The Incarnation is in the Christian Scriptures. Here, John and Paul wrote about it against gnosticism and docetism:
The Father prepared a human body for his own Son who is his Word. Hebrews 10:5
The Word who is God as to his nature came into existence in a human body. John 1:1,14
The Word became flesh, assumed its likeness.Hence, Jesus lived human life and died human death without having the original sin:
He partook of the same i.e. flesh( substance of a human body) and
blood( weakness associated with the flesh). Hebrews 2:14
Having taken the appearance and nature of a human servant by means of
becoming in likeness of men. Philippians 2:7
God, sending his own Son in the likeness of the flesh of sin. Romans
The Son as the image of the invisible Father and as divine in nature, is invisible per se because as God he is sprrit but he became visible in the flesh ( John 4:24):
He became visible in the substance of a human body. 1 Timothy 3:16
The Eternal Life with the Father became visible. 1 John 1:2
The Son became visble to take away our sins and destroy the work of
the Devil. 1 John 3:4-8
HOW THE SON BECAME HUMAN WITHOUT INHERITING ORIGINAL SIN?
The Holy Spirit overshadows Mary i.e. impregnates the Virgin with an original-sin-free human sperm cell.Hence,her fertilized egg is now Jesus, one person with two unmixed but united natures of God and man. ( Matthew 1:23,Luke 1:35)
WHEN? at the right time ( Galatians 4:4), 6 B.C.
WHERE? Bethlehem ( Matthew 2:1).
The Son became visble in the flesh to take away our sins and destroy
the work of the Devil. (Hebrews 2:14-15, 1 John 3:4-8)
THE POSSIBILITY OF THE INCARNATION
The Incarnation is possible for three logical reasons:
(1) It doesn't make the Son not Almighty but on the contrary it proves that he is Almighty.
(2) It doesn't contradict or violate the Son's immutability.He didn't transform or change into human like in Greek mythologies.
(3)The fact that the Son chose to become flesh proves that it is possible.
He emptied himself of glory-exposure, having taken the morphe of a
servant via becoming in likeness of men. Philippians 2:7