I know you know.
I agree and scripture agrees God took on flesh and Jesus as a human
was not in Heaven prior to His entering earth in time.
in John 1:14 we read, “And the Word became 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.” This verse clearly declares, in context, that the Son became flesh at the time of his incarnation.
Again, in Philippians 2:5–7 we read, “Let this mind be in you which was also in Christ Jesus, who, being in the form of God, did not consider it robbery to be equal with God, but made Himself of no reputation, taking the form of a bondservant, and coming in the likeness of men.” The clear statement is that he “took the form of a bondservant,” that is, he came in human flesh.