The word 'body' is not in Paul's reference in Colosians. That's your made-up idea and addition.
God made the plan for salvation to be THROUGH Jesus' body before He made anything.
The universe was made in him.
Colossians 1:16 For
in him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things have been created
through him and
for him.
John 1:3
Through Him all things were made, and without Him nothing was made that has been made.
John 1:10
He was in the world, and though the world was made
through Him, the world did not recognize Him.
Hebrews 1:2
But in these last days He has spoken to us by His Son, whom He appointed heir of all things, and
through whom He made the universe.
Romans 11:36
For
from Him and
through Him and
to Him are all things. To Him be the glory forever! Amen.
1 Corinthians 8:6
yet for us there is but one God, the Father, from whom all things came and for whom we exist. And there is but one Lord, Jesus Christ,
through whom all things came and through whom we exist.
Jesus reconciles everything though him, again. Reconcile means again.
Ephesians 1:10
as a plan for the fullness of time, to bring all things in heaven and on earth together
in Christ.
Colossians 1:20
and
through Him to reconcile to Himself all things, whether things on earth or things in heaven, by making peace through the blood of His cross.
Revelation 3:14 "And to the minister of the Church at Laodicea write as follows: "'This is what the Amen says--the true and faithful witness,
the Beginning and Lord of God's Creation.
Paul says that all things were created by 'Him', not 'by his body'.
He is the firstborn over all creation. After he rose from the dead, he ascended to heaven with the same glory he had before coming.
GOD didn't need a body to create anything.
God the Father is INVISIBLE.
The Bible says the Father had a soul.
The Father was seen.
'Firstborn' is a title of rank in that context.
Firstborn is what is said about Jesus being the firstborn over all CREATION. The creation is everything seen and unseen.