the WORD who was God in the Beginning was never created for HE has "no beginning and no end."
a physical body was created for God to dwell in = "and the WORD became flesh and dwelt among us"
"Firstborn
over all creation" is
only speaking of the Resurrection of Christ from the Dead
God, who has no beginning and no end,
became a man that HE might taste death for every man and thru HIS sinless life HE conquered Death by the Power of HIS Resurrection and has become "the Firstborn over all creation".
Therefore the Scripture says: Revelation 1:4-8
Grace and peace to you from Him who is and was and is to come, and from the seven Spirits
c before His throne,
5and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler of the kings of the earth.
To Him who loves us and has released us from our sins by His blood,
6who has made us to be a kingdom, priests to His God and Father—to Him be the glory and power forever and ever! Amen.
7Behold, He is coming with the clouds, and every eye will see Him—even those who pierced Him. And all the tribes of the earth will mourn because of Him. So shall it be! Amen.
8“I am the Alpha and the Omega,” says the Lord God, who is and was and is to come—the Almighty.