Baha'is believe that the soul of Jesus existed in the spiritual world (heaven) before the body of Jesus was born of Mary in this world.
I guess you think that the Jesus of Paul created the entire material universe because of the following verse?
Col 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:
Yes, and Corinthians 8:6 yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ,
through whom are all things and through whom we exist.
That verse above is patently absurd. Only God could do what that verse says, and God did what that verse says.
Jesus was not God, so Jesus did not create all things.
Why do you think that the Jesus of John created the entire material universe?
I don't think anyone in the bible created the entire universe. I see nothing indicating purpose or point in the design ─ we have septillions of stars with no planets, a few planets, a lot of planets, yet life is known to exist on exactly one planet, and on that planet human life only after the best part of 14 bn years had elapsed ─ which is to say, if God did it, then God is monumentally, mind-bogglingly, terminally inefficient.
John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
I believe that Jesus was the Word.
The Word was God because Jesus was God manifested in the flesh.
I agree it's arguable that this is what John's author meant. ("Logos", from the verb "légo", to speak, means "a speaking", and from there has a great many further meanings.)
1 Timothy 3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
I do not believe that Jesus was God incarnated in the flesh, because God is spirit, not flesh.
Then from that point of view, an acceptable interpretation of that verse might be, "God was manifest through [his] human envoy".
The Word was with God because Jesus was with God in the spiritual world before He was born in this world.
That's true of the Jesuses of Paul and John, the gnostic ones. It's not true of the three synoptic Jesuses ─ Mark's Jesus was just an ordinary Jewish lad until God made him [his] son by adoption on the model of David's adoption Psalm 2:7, and the Jesuses of Matthew and Luke were the result of the divine insemination of a virgin, a bald fairy-tale but a best seller in the market square.
I believe that the following two verses are about God. All things were created by God.
John 1
2 The same was in the beginning with God.
3 All things were made by him; and without him was not any thing made that was made.
For some reason I get an image of Jean-Luc Picard saying to Riker, "Make it so, Number One."