Romans 8:3 states that God sent “His own Son in the likeness of sinful flesh as an offering for sin …” The text states that the Son was sent “in the likeness of sinful flesh.” In other words, the Son was sent “in the flesh.” There is nothing in the text to suggest that an alleged “Heavenly Son” was sent from heaven to earth in the flesh!
Galatians 4:4 doesn't say that God sent forth his son to be born of a woman. It says, “God sent forth His Son, born of a woman.” The sensible meaning of the text is that God sent forth his son who was born of a woman. This is evident by Jesus’ prayer in John 17:18, “AS You sent Me into the world; I also have sent them into the world.” Since the disciples were sent by Jesus “INTO THE WORLD” just “AS” the Father sent Jesus “INTO THE WORLD,” we have sufficient proof to understand that the Son was sent after he was born at Bethlehem.
Paul wrote in 1 Tim. 6:7, “For we have brought nothing into the world, so we cannot take anything out of it either.” Paul was not saying that we were created beings in heaven before we were “brought nothing into the world.” Therefore, just as we were not literally heavenly sons and daughters before being brought into the world, so the Son of God was not a heavenly Son before being sent “into the world” through being “born of a woman.”