There would be no point to the scripture you quoted if it were not talking about the pre-existence. Why would God ordain someone who didn’t exist?
“before you came forth out of the womb I sanctified you, and I ordained you a prophet unto the nations.” (Jer 1:5).
God said that he ordained Jeremiah before he came out of the womb … not before he entered it.
God knew every detail of the universe before he created it. Architects and engineers know their creation intimately … before it is created. All of the above examples ‘pre-existed’ in the mind and heart of the creator.
To assume that we are not spirits, with a beginning, created by God … negates these Bible verses:
in the book of revelation where Jesus clearly states: ‘I am the beginning’ …
and again in Col 1:16
For by him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things were created by him and for him.
And… John 1:3
Through him all things were made; without him nothing was made that has been made.
“Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.” (Eccles. 12:7) If our spirit returns to God when we die we must have been with him once before, for how can we return to a place where we have not been?
Everything comes from the heart and mind of God… It did not have to pre-exist in order to exist now… as in the examples above. The apple that forms on the tree 5 years from now “pre-exists” only in the genetic makeup of the tree. The apple does not have to “be” now in order to “be” in the future.
The Bible states clearly that God the Father is Spirit. The spirit of man is fore-known because it is part of God’s genetic makeup … and designed, in advance, for a specific purpose. Once that purpose is accomplished the created spirit returns to the Creator.