Col 1:16-17
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. And he is before all things, and by him all things consist.
John 1:3-4
All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men.
These verses are referring to Christ Jesus. If Jesus created all things, how could man be His "spiritual brothers and sisters". They aren't. They are His creation.
Before anyone counters and says that only the Father is the creator, read John 1:1 adn John 1:14:
"In the beginning was the Word, and the Word was with God, and the Word was God." "And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth."
The Word is clearly Christ Jesus. Also, notice how the this verse states that He is the "only begotten of the Father"? Jesus had no spiritual "brothers and sisters".
1 Corinthians 15:47
The first man is of the earth.
This certainly implies that man did not exist before he was on the earth. To believe that man pre-existed in heaven is a direct condradiction of this verse.